UNlON INTERNATIONALE DE ET
RAPPORTS 1954-1955-1956
I. U. T. A. M.
29, avenue de Ia Division Leclerc CHATILLON-SOUS- BAGNEUX (Seine) - France UNION INTERNATIONALE DE MtCANIQUE THtORIQUE ET APPLIQUtE
RAPPORTS 1954-1955-1956
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Page
Avertissement . 2 I. - Comptes-rendus annuels d'activite (1954, 1955, 1956) . 3 II. - Rapports du Tresorier (1954, 1955, 1956) 9 III. - Appendices : A. - Statuts de l'Union Internationale de Mecanique Theorique et Appliquee . 19 B. - Resolution de 1' Assemblee generale de Pallanza. 22 ·c. - Statutes of the International Union of Theoretical and Applied Mechanics 23 D. - Resolution of the General Assembly at Pallanza . 26 E. - Organisations adherentes et Membres de 1' Assemblee gene- rale au 31-10-56 ...... 26 F. - Composition du Bureau de l'Union 31 G. - Representation de IUTAM a l'Assemblee generale de l'Union Mathematique lnternationale, tenue a La Haye (31 aout et 1er septembre 1954) . 31 H. - Colloque sur la Photoelasticite et la Photoplasticite (Bruxelles, 29-31 juillet 1954) . 32 I. - Colloque sur la Fatigue (Stockholm, 25-27 mai 1955) . 35 J. - Colloquium on Deformation and Flow in Solids (Madrid, 26-29 septembre 1955) 37 K. - JXe Congres International de Mecanique Theorique et Appliquee (Bruxelles, 5-13 septembre 1956) . . . 39 L. - Publications . 41 M. - Souscriptions annuelles 44 N. - Comptes en banque de l'IUTAM 44 0 . - Liste des bienfaiteurs pour 1954, 1955, 1956 45 I. - ACTIVITIES OF IUTAM DURING 1954
Meeting of Bureau
A meeting of the Bureau of IUTAM was held at Brussels on July 27, 1954 from 10:00 a.m. to 1:00 p.m. All of the members of the Bureau were present: Prof. Theodore von Karman, honorary president, Dr. H. L. Dryden, president, Prof. J. Peres, vice-president, Prof. F. H. van den Dungen, secretary, Prof. G. Temple, treasurer, and Prof. J. M. Burgers, Prof. S. Goldstein, Prof. R. Gramme!, and Prof. F. K . G. Odqvist, members. By invitation Dr. Ronald Fraser, Administrative Secretary, AVERTISSEMENT ICSU, also attended. It was reported that the final allocation of the 1954 UNESCO grants . J?iverses circonstances ayant entrave precedemment la parution to IUTAM via ICSU included S 2970 for symposia, S 2475 for committee reguhere des rapports annuels de l'IUTAM, il a ete decide que ceux des meetings, and S 280 for publications. For 1955 the current allocation annees 1954, 1955 et 1956 seraient groupes en une seule publication. was S 5000 for symposia and S 500 for publications. The Secretary reported the admission of the Polish Academy of En presentant celle-ci au lecteur, je tiens a remercier particulierement Sciences on Feb. 1, 1954 by mail ballot of the General Assembly. tous ceux qui ont apporte au Secretariat leur concours pour reunir les Confirming the action of the Bureau on September 21, 1953, it was informations et documents necessaires . decided to nominate to the General Assembly Prof. F. H. van den Dungen ,Ces. remerciements s'adressent non seulement au precedent Secretaire as Secretary and Prof. F. K. G. Odqvist as member of the Bureau for de 1 Umon, M. H. F. Van den Dungen, mais egalement a MM. J. M. 1954-1956, both having found it possible to continue for the full term Burgers, H. L. Dryden, W. T. Koiter et G. Temple. of four years. Two colloquia were approved for 1955, a Colloquium on Fatigue to be held in Stockholm on May 25-27, 1955 and a Colloquium on Defor- Le Secretaire de l'U nion mation and Flow in Solids to be held in Madrid on September 26-29, Maurice Roy. 1955. Funds amounting to S 3000 and $ 4000, respectively, were allocated for financial support of these colloquia, of which $ 1500 was from the unrestricted funds of JUT AM and S 5500 from ICSU grants ($ 5000 from 1955 funds plus S 500 by transfer from 1954 balances).
Meeting of General Assembly
A meeting of the General Assembly of IUTA..l\1 was held at Brussels on July 27, 1954 from 3:30 to 5:30p.m. and on July 28, 1954 from 9:30 to 11:10 a.m. Those in attendance from adhering organizations were W. T. Koiter (Int. Comm. for Congresses Appl. Mech.}, G. Temple (Gt. Britain}, H. Solberg (Norway), G. Colonnetti (Italy), L. Baes, A. Coppens, and F. H. van den Dungen (Belgium}, N. J. Hoff and R. D. Mindlin (U.S.), F. K. G. Odqvist (Sweden}, Sir K. S. Krishnan (India), Hans Ziegler (Switzerland), H. Gertler, R. Gramme!, and A. Walther (Germany), M. Reiner (Israel}, Antonio Ntniez Rodriguez, Antonio Perez-Marin (Spain}, Karl Federhofer (Austria), M. Nisida (Japan), C. B. Biezeno and J. M. Burgers (Netherlands), S. E . Stenij (Finland), Michal Lunc and Wactaw Olszak (Poland). The elected members present were H. L, Dryden, H. Favre, S. Goldstein, Th. von 4 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 5
Karman, J. Peres, R. V. Southwell, and W. Weibull. In addition attendance at Paris were Th. von Karman (Honorary president), Dr. Ronald Fraser, Administrative Secretary of ICSU, and Mr. Millan H. L. Dryden, president, J. Peres, vice-president, F. H. van den Dungen, (Spain) were present on invitation. secretary, J. M. Burgers and R. Gramme!, members, and on invitation Prof. Jacques Cox welcomed the members of the General Assembly the following members of the Scientific Committee on the Colloquium on to Brussels and the Palais des Academies on behalf of the Belgian Deformation and Flow of Solids: G. I. Taylor, Maurice Roy, G. Millan, Academy of Sciences. together with A. Perez-Marin of the local organizing c?mmittee. Those The President invited the Honorary President, Th. von Karman, in attendance at Stockholm were H. L. Dryden, president, G. Temple, to share the chair. The General Assembly greeted his attendance with treasurer, and F. K. G. Odqvist, member. pleasure. The Secretary announced that Dr. Anton Kuhelj, Faculty of On nomination of the Bureau, the General Assembly elected Prof. Engineering, Ljubljana, Cojzova 5, replaces Prof. A. Bilimovic as repre- F. H. van den Dungen as Secretary and Prof. F. K. G. Odqvist as sentative of Yugoslavia and Dr. Ing. R. Gran Olsson, Norges member of the Bureau for the period 1954-1956. Hegskole, Trondheim, replaces Prof. Dr. H. Solberg as representative It was announced that the Colloquium on Oscillations and Non- of Norway. linear Servomechanisms which had been planned for 1954 could not The Bureau discussed the programs planned for the 1955 be held. and decided to hold in 1957 a colloquium on some aspect of flmd Prof. reviewed the plans for the Colloquium on Fatigue mechanics in Germany and the Third Symposium on Stellar Gas Dynamics to be held m Stockholm on May 25-27, 1955, and Mr. Millan reported on in the U.S. R. Gramme} was requested to begin plans for the first, and plans for the Colloquium on Deformation and Flow in Solids to be held J. M. Burgers for the second. · in Madrid, Sept. 26-29, 1955. The final allocation of funds for 1955 from UNESCO to IUTAM in The Bureau had recommended a colloquium on some aspect of ICSU amounted to a total of $ 5750 (S 5000 for symposia and S 750 for fluid mechanics at Gottingen, Germany, Sept. 5-7, 1956. After conside- publications), supplemented by $ 350 for publications and $ 500 for the discussion the General A.ssembly voted to postpone this colloquium colloquium on deformation and flow of solids transferred from 1954. until 1957 and leave the location undetermined at this time. It was felt The UNESCO grant for 1956 via ICSU to IUTAM is provisionally that there should be no colloquia during the year of the International set as S 6000 as compared with $ 10, 500 requested. Congress. The USSR participants in the Colloquium on a It was announced that the dates of the Ninth International Congress desire to adhere to JUTAM . The president was authonzed to wnte to had been fixed by the Organizing Committee as August 28 - Sept. 2, 1956. the Akademia Nauk USSR indicating that the Bureau would be glad to recommend to the General Assembly the admission of the Academy as Colloquium on Photoelasticity and Photoplasticity. an adhering organization to IUTAM. The letter was written and delivered by hand to Prof. I. A. Oding at Stockholm. A Colloquium on Photoelasticity and Photoplasticity was held at the University of Brussels from July 29 to 31, 1954. The program was by a scientific committee consisting of H. Le Boiteux, chmrman, H. Favre, and M. Hetenyi. Twenty-nine scientists from 11 Colloquium on Fatigue countries presented and discussed 36 papers. Because of the limited funds available and the large number of A Colloquium on Fatigue was held at the Royal Institute of Techno- photographs accompanying the papers, the Organizing Committee decided logy, Stockholm, May 25-27, 1955. The Organizing Committee consisted that it was feasible only to encourage publication in the usual journals, of W. Weibull, president, F. Odqvist, vice-president, A. Isaksson, and to publish abstracts with reference to the place of publication of G. Wallgren, S. Fornander, 0. Forsman, C. Schaub. the complete paper where available. The program consisted of 35 lectures, principally dealing with problems of a statistical and basic nature. The colloquium was attended ACTIVITIES OF IUTAM DURING 19SS by 149 participants from 16 countries. The proceedings have been published by Springer-Verlag, Berlin/GottingenfHeidelberg, 1956 under Meeting of Bureau. the editorship of W. Weibull and F. K. G. Odqvist. In addition to S 3500 from the ICSU grant to JUTAM, the equivalent A meeting of the Bureau of JUT AM was held at Paris on May 23 of about S 1500 was added by the Swedish government and industry for 1955 &nd an adjourned session at Stockholm on May 25, 1955, Those publications, for administrative purposes, and for entertainment. 6 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 7
Colloquium on Deformation and Flow of Solids. Congress of Applied Mechanics to help wit h the expenses of young scientists attending the Congress. A Colloquium on Deformation and Flow of Solids was held at the The 1957 allocation to IUTAM from ICSU consisted of $ 3450, of Consejo Superior de Investigaciones Cientificas and at the laboratories which S 2700 is for the Symposium on Cosmical Gas Dynamics and $ 750 of the Instituto Nacional de Tecnica Aeronautica <
(Finland), M. Lunc, W. Nowacki, and W. Olszak (Poland), N. Musk- chelishvili, A. A. Nikolsky, L. I. Sedov, and V. V. Sokolovsky (USSR). Personal elected members present were, H. L. Dryden, Th. von Karman, Y. H. Ku, J. Peres, R. V. Southwell, G. I. Taylor,and S. P. Timoshenko. As required by the by-laws, a new election was made of personal members, resulting in the following list: J . Ackeret S. Goldstein W. Rubinowicz J. M. Burgers Th. von Karman R. V. Southwell G. A. Crocco Y. H. Ku G. I. Taylor H. L. Dryden J. Peres S. P. Timoshenko II. - RAPPORTS DU H. Favre K. Popoff W. Weibull
The Bureau elected for 1957-1960 consists of: Summarised Statements of Receipts and Payments for the year ended 31st October 1954 F. K. G. Odqvist, President H. L. Dryden, vice-president Maurice Roy, secretary A. UNRESTRICTED FUNDS G. Temple, treasurer u.s. P ounds French Belgian Dollars Sterling Francs Guilders Francs J. Ackeret } G. Colonnetti members Balances, 1st November 1953 2,718. 99 760/ 0/8 234,784 760.85 Nil R. Gramme! Receipts W. T. Koiter Subscriptions (Schedule 1) . 950 . 00 302/11/1 190,060 946.03 Bank Interest Receivable . 9.82 Internal transfer between ·Ninth International Congress of Applied Mechanics. banking accounts . (250.00) 12,500 ' do (548.86) 7,208 (see Koiter's report p. 39) Total 3,418.99 1,062 /11/9 424,844 1,167. 84 19,708 Payments Postage, Stationery and Mis- cellaneous Expenses. . . 9/ 6/10 91.40 5,000 Travelling and Subsistence Expenses of Dr. R. Fraser, as representative of I. C. S. U., at meeting of Bureau and General As- sembly, Brussels, 1954 . . 1,800 Meeting of Bureau 1953. Tra- velling and Subsistence Grants to R. Gramme! and F. K. G. Odqvist (Schedule IV) . . . . . 201.33 Auditors' fee in respect of year ended 31 st October 1953 ...... 42/ 0/0 I. C. S. U. dues ...... 22.00 Publications : I. U. T. A.M. Report 1952. 180.94 1953. 8,230 International Congress Istan- bul, report 1950 . . . . 800.00 Bank Charges...... 18.14 135 --- Total Payments 1,204.27 51/ 6/10 Nil 109.54 15,165 --- Balances, 31st October 1954 .. 2,214. 72 1,011/4/11 424,844 1,058.30 4,543 RAPPORTS 1954-1955-1956 11 10 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET AP PLIQUEE
SCHEDULE I Summarised Statements of Receipts and Payments for the year ended 31st October 1954. Subscriptions received during the year ended 31st October 1954 u. s. Pounds French Belgian Dollars Sterling Francs Guilders Francs U. S. Pounds French Dollars Sterling Francs Guilders
B. RESTRICTED FUNDS Subscription 1952: Balances, 1 st N ovember 1953 631.65 250 /11 / 1 (9,830) (451.10) Italy 50.00 Receipts Subscriptions 1953: Grant from United Denmark 17/16/3 Nations Educatio- Spain .... 35,000 nal, Scientific and Switzerland . . 50.00 Cultural Organisa- tion: Subscriptions 1954: Category 2 : Cost of Austria . . 17 /17/2 Publications . 280 Belgium . 150.00 Category 3 Mee- Denmark 17/15/7 tings of Committees 2,475 Finland . 50.00 Category 4 : Sym- France .. 87,500 posia 2,970 Germany. 52,560 India ...... 35 /14 /3 s 5,725 3,725.00 7,578.85 International Committee for the Con- gresses of Applied Mechanics 17 /15 /10 Internal transfers between Israel . . . . . 376. 78 banking accounts (3,259. 09) 42,800 Japan. 150.00 Netherlands . . 380.00 Total. 4,356 . 65 250 /11 /1 (9,830) 3,868. 66 42,800 Norway . 17 /17 /2 Poland 35 /12/10 Payments Spain . 15,000 Sweden 50.00 Refund of part of Unesco Switzerland 50.00 grant for 1952-53 transfe- United Kingdom. 142 /2 /0 rable to other unions through U.S.A.. 400.00 I. C. S. U...... 144.07 Yugoslavia. 189.25 Meeting of Bureau and General Assembly, Brussels 1954 950.00 302/11 /1 190,060 946.03 (Schedule II) 1,186.00 52 /17 /0 342.00 42,800 Symposium on Photo-Elasti- city, Brussels 1954 (Sche- dule III) 2,700. 00 26 /15 /9 52,500 171.00 Note. A remittance for 50,000 francs was received of which 35,000 francs has been Advance payment to printers allocated to 1953, the remainder being treated as a part payment for 1954. in respect of publication of The balance due for 1954 was received after 31st October 1954. proceedings of Symposium on Cosmical Aerodynamics, Cambridge 1953...... 3,800.00 Total Payments. . 4,030. 07 79/12 /9 52,500 4,313. 00 42,800
Balances, 31 st October 1954 . 326. 58 170 /18 /4 (62,330) (444. 34) Nil Summary of Balances Unrestricted Funds . 2,214. 72 1,011 /4 /11 424,844 1,058.30 4,543 Restricted Funds. 326.58 170/18 /4 (62,330) (444.34) Nil Balances at Banks, 31 st Octo- ber 1954 (Bank). . 2,541.30 1,182/3 /3 362,514 613.96 1,671 (Cash in hand) . . . 2,872
Notes. ( ) denotes deduction or negative balance. The balances shown by the banks on the sterling and dollar accounts at 31 st October 1954, exceed those shown above by the amounts of unpresented cheques viz. K. Federhofer £ 26-15-9, A, Walther$ 50 and I. C. S. U. S 144.07. 12 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APLPIQUEE RAPPORTS 1954-1955-1956 13
Accounts for the year ended 31st October 1954 Summarised Statements of Receipts and Payments Meeting of Bureau and General Assembly, Brussels, 1964 for the year ended 31st October 1966 Travelling and Subsistence Expenses SCHEDULE II A. UNRESTRICTED FUNDS u.s. Pounds French Belgian u.s. Pounds French Belgian Guilders Francs Dollars Sterling Francs Franc• Dollars Sterling
Balances, 1 st November 1954. 2,214. 72 424,844 1,058.30 4,543 Austria K. Foderhofer . . 26/15 /9 1,011 / 4 /11 Finland S. S. Stenij. 7,500 Receipts France J . P eres . . 1,800 Germany R . Gramme] . 50.00 Subscriptions (Schedule I). . . 550.00 357 {15{10 110,855 190 .00 12,490 do H. Gortler. 50.00 Bank Interest Receivable. . . 968 28.59 do A. Walther .. 50.00 Great Britain Sir R. Southwell. 3,750 Total. 2,764. 72 1,369/ 0 /9 536,667 1,276. 89 17,033 do G. Temple. 26/ 1 /3 India K. S. Krishnan . 500.00 Italy G. Colonnetti 7,500 Payments Israel S. Goldstein . 5,000 do M. Reiner . 5,000 Postage, Stationery and Mis- Netherlands C. B. Biezeno. 171.00 cellaneous Expenses . . . . 101 5 /7 2,800 do J. M. Burgers. 2,250 Auditors' Fee in respect of year do W. T. Kolter . 171.00 ended 31st October 1954 . . 42/ 0 {0 Norway H . Solberg ... 7,500 I. C. S. U. dues . 25 .50 Spain A. Nunez . . . } Publications: do A. Perez-Marin. 150.00 Printing of Summaries of pro- do Millan ... ceedings of Symposium on Sweden F. K. G. Odqvist 150 .00 Photo - Elasticity, Brussels, do W. Weibull ... 100.00 2,500 1954 ...... 13,543 Switzerland N. Ziegler . 50.00 Proceedings of Symposium U.S. A. N. J. HolY. 86.00 on Cosmical Aerodynamics, Cambridge, 1953 - Total. 1,186.00 52/17 /0 Nil 342.00 42,800 I. U. T. A. M.'s share of cost, after deducting U.N.E.S.C.O. grant of $1,000 and contri- Colloquium on Photo-Elasticity, Brussels, 1954 button from the Internatio- Travelling and Subsistence Expenses nal Astronomical Union .. 896.08 Bank Charges. . 675 21 .93 40 SCHEDULE III France M. Ballet 26,250 Total Payments. 25.50 52 / 5 /7 675 918.01 16,383 do J. Foch. 26,250 Germany G. Drouvon 50. 00 Balances, 31st October 1955 .. 2,739 .22 1,316 {15 {2 535,992 358.88 650 Great Britain E. Frankl . 26/15 /9 Netherlands E. Monch. 50.00 do R. Boiten 171 .00 Sweden R. Hiltscher . 150.00 Switzerland R. Baud. 50.00 U.S.A. D. C. Drucker.. 400.00 do A. J . Durelli. 400.00 do M. M. Procht 400. 00 do M. Hetenyi. 400.00 do E . Orowan 400. 00 do C. D. West . 400. 00 Total. 2,700 . 00 26/15{9 52,500 171 . 00 Nil
Meeting of Bureau, Brussels 1963 Travelling and Subsistence Expenses paid from Unrestricted Funds SCHEDULE IV Paid during financial year 1952-93: J . M. Burgers . . . • • • . . 25 guilders ( $6 . 58) G. Temple ...... £30 ($84.00) Paid during financial year 1953-54: R. Gramme! ...... 225 D. M. s 54.93 F. K . G. Odqvist. . • . . • . 750 Sw. crs. $146.40 $201.33 14 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 15 Summarised Statements of Receipts and Payments for the year ended 31 st October 1955 Subscriptions received during the year ended 31st October 1955
B. RESTRICTED FUNDS ScHEDULE I u.s. Pounds French Belgian Swedish u.s. Pounds French Belgian Dollars Sterling Francs Guilders Francs Crowns Dollars Sterling Francs Guilders Francs Subscriptions 1953: Balances, 1st Novem- Hungary .... 2,500 ber 1954 . 326.58 170/18 /4 (62,330) (444.34) Italy...... 50.00 Sweden . .... 50.00 Receipts Subscriptions 1954: Grant from United Hungary. 2,500 Nations Educatio- Italy. . . 50.00 nal, Scientific and Poland .. 2,500 Cultural Organisa- Spain (balance) . 23,355 tion (per Interna- Subscriptions 1955: tional Council of Belgium 150.00 Scientific Unions) 3,000.00 6,635.94 5,185.70 Finland .. 50.00 France. 87,500 Total. 3,326.58 170/18 /4 (62,330) 6,191.60 5,185.70 Germany. 53/10/3 Hungary . 2,500 Payments India ...... · · · 35/14/3 International Committee for Refund of part of the Congresses of Applied U.N.E.S.C.O. grant Mechanics . 18/ 4/11 for 1953-54 transfe- Israel. 17/15/6 rable to other Italy .. 17/15 /5 unions t h r o u g h Japan . 53/17 /5 I. c. s. u ...... 69 /13 /0 Poland. 2,490 Meeting of Bureau, Spain ... 100.00 Paris, 1955 (Sche- Sweden .. 50.00 dule II) . . . . . 600.00 25 /0 /0 98.50 Switzerland. 50.00 Colloquium on Fa- United Kingdom . . 143/1 /0 tigue, Stockholm, Yugoslavia ...... 190.00 1955 (Schedule III). 2,335.00 223 /11 /0 1,189.10 (Country unidentified) 17 /17/1 Colloquium on Defor- mation and Flow of 550.00 357/15 /10 110,855 190.00 12,490 Solids, Madrid, 1955 (Schedule IV) . 2,400.00 320/ 0!0 Bank Charges. . 1.00 Meeting of Bureau, Paris, 1955 Total payments. 5,335.00 638 ( 4 /0 98.50 1,190.10 Travelling and Subsistence Expenses.
Balances, 31st Octo- SCHEDULE II ber, 1955. . . . . (2,008.42) (467 /5 (8) (62,330) 6,093.10 3,995.60 Summary of Balances u.s. Pounds Unrestricted Funds . 2,739.22 1,316/15 /2 535,992 358.88 650 Dollars Sterling Guilders Restricted Funds . . (2.008.42) <467 1 5 /8) (62,330) 6,093.10 3,995.60 (Cash in hand) . . . 14 /3 650 Netherlands J. M. Burgers. 98,50 Balances at Banks, United Kingdom G. I. Taylor . . 25/0/0 31st October 1955 . 730.80 848/15/3 473,662 6,451.98 3,995.60 U. S. A. H. L. Dryden .. 600.00 600.00 25/0 /0 98.50 Notes. ( ) denotes deduction or negative balance. The balances shown by the banks on the dollar and sterling accounts at 31st October, 1955 exceed those shown above by reason of unpresented che- ques amounting to $2,065 and £133/13/0 respectively. 16 UNION INTERNATIONALE DE liiECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 17
Colloquium on Fatigue, Stockholm 1955 Summarised Statement of Receipts and Payments Travelling and Subsistence Expenses for the year ended 31st October 1956
ScHEDULE III u.s. Pounds French Belgian Swedish u.s. Pounds Swedish Dollars Sterling Francs Guilders Francs Crowns Dollars Sterling Crowns (Cash In Hand). . . 14/3 650 Finland J. Salokangas. 30.00 Balances, 1st Novem- France R. Cazand. . 375.00 ber, 1955. 730.80 848/15/3 473,662 6,451.98 3,995.60 Germany H. Ebner . 311.00 do E. Gassner 120.00 Receipts do F. Wever. 120.00 Subscriptions, per Italy F. Gatto 150.00 schedule. 800.00 606/14/8 87,500 190.00 Netherlands F. J. Plantema. 125.00 Bank Interest Recei- Norway A. Markestad 30.00 vable .. 28.12 Poland A. Kumelj. . 65.00 310.70 do M. Lunc. 170.00 Total. 1,530.80 1,456/4 /2 561,162 6,670.10 650 3,995.60 Saar P. Laurent . . 60.00 Spatn A. Perez-Marin. 150.00 Payments United Kingdom P. B. Benham . 44/12 /0 Postage, Stationery do R. B. Heywood ...... 37{10 {0 103.70 and Miscellaneous do Representative of British Iron & Expenses. 10 /5 /6 Steel Research Association 44 /12 /0 Auditors' fee in res- do G. Temple .. : . 52 / 5 /0 360.00 pect of the year do E. W. C. Wilkms 44/12/0 ended 31st October U.S.A. W. N. Findley. . . 330.00 1955 .. 42/0 /0 do A. M. Freudenthal . 300.00 I. C. S. U. dues . 21.50 do do 30.00 Bank Charges . . . . 6.95 do F. A. McClintock. 130.00 103.70 Meeting of Paris Bu- do do 50.00 reau 1955- Contri- do R. E. Peterson. . 100.00 bution to expenses of Prof. Dr. R. 2,335.00 223/11/0 1,189.10 Grammel .. 42.00 ' Travelling and Sub- sistence Expenses of Colloquium on Deformation and Flow of Solids, Madrid 1955 French delegation Travelling and Subsistence Expenses to Madrid, Collo- quium, 1955 . . . 210,000 SCHEDULE IV Contribution to tra- velling and subsis- U.S. Pounds tence expenses of Dollars Sterling Prof. G. Temple, at- tending Executive P. Janssens . 100.00 Meeting of I.C.S.U., J. Kestens. 100.00 Bagneres de Bigorre Germany A. Dehlinger. 108.00 1956 (£9/15/8) and do R. Grammel . 108.00 Brussels Conference do H. Kauderer. 108.00 September 1 9 5 6 do G. Liebfried . 126.00 (£5/19/0). . . . . 15/14/8 do K. Marguerre. . . 108.00 Expenses of Prof. do F. Schultz-Grunow 108.00 Odqvist attending do A. Seeger .. 108.00 Brussels Conference do W. Zerna .. 126.00 September 1 9 5 6 Israel M. Reiner 200.00 (Note: these expen- Sweden S. 0. Asplund . 100.00 ses were reimbursed do K E. C. Nielsen . 100.00 by I.C.S.U. 9-11-56) 1,337.00 United Kingdom F. C. Frank. 64/0 /0 IX I n t e r n a ti o n a 1 do N. F. Mott 64 /0 /0 Congress of Applied do J. G. Oldroyd. . 64/0 /0 Mechanics Brussels do G. I. Taylor . . . 64 /0 /0 1956. Travelling do L. R. G. Treloar . 64/0/0 Expenses of Messrs. U.S.A. H. Aroeste. 150.00 F. Niordson and do E. H. Lee. 400.00 0. Petterson . 364.00 do M. Plesset • 350.00 --- Total Payments. 63.50 68/ 0 /2 210,000 6.95 1,701.00 2,400 . 00 320 /0 /0 (Cash in Hand) . . 12/11 Balances at Banks 31st October 1956. 1,467.30 1,387/11/1 351,162 6,663.15 650• 2,294.60 • (See auditors' report) 18 UNION INTERNATIONALE DE MECAN IQUE THEORIQUE ET APPLIQUEE
Subscriptions received during the year ended 31st October 1956 u.s. Pounds French Dollars Sterling Francs Guilders Ill. - APPENOICE Subscriptions 1955: Denmark. 35/15/4 U.S.A.. 400.00 A. Statuts de PUnion internationale Subscriptions 1956: de Mecanique theorique et appliquee Austria . 17/17 /2 Denmark 35/15 /4 Finland . 17/17/2 PREAMBULE France .. 87,500 Germany .. 53 /16 /3 India . • • • • • • 0 • • 35 /14 /3 Afin de contribuer plus efficacement au developpement de Ia science International Committee for the Con- de Ia mecanique, le Comite International des Congres de Mecanique Appli- gresses of Applied Mechanics 17 /17 /2 Israel . 17 /17 /2 quee avait decide, lors de sa reunion a Paris en septembre 1946, de fonder Italy . 17/16/5 une organisation permanente portant le nom d'« Union internationale Japan . . 53 /8 /7 Norway . 17 /17 /3 de Mecanique Theorique et Appliquee». Poland 53 /14 /3 Cette Union a ete admise dans le Conseil International des Unions Rumania. 17 /16 {2 Spain .. 35 {14 {2 Scientifiques par decision du Comite Executif de ce Conseil en 1947. Sweden . 17 /12{4 Dans les reunions tenues a Londres en septembre 1948, il a ete decide Switzerland 17 {8 {7 que le Comite International continuera, en tant que corps independant United Kingdom. 142{17 {1 U.S.A .. 400.00 de !'Union, a organiser, comme par le passe, les Congres Int ernationaux Yugoslavia. 190.00 de Mecanique Appliquee et que ce Comite aura Ie Statut d'une organi- 800.00 606 /14 /8 87,500 190.00 sation adherente a !'Union.
I
L'Union Internationale de Mecanique Theorique et Appliquee a pour buts: a) De former un lien entre des personnes et des organisations natio- nales ou internationales s'occupant de recherches scientifiques (theoriques ou experimentales) dans le domaine de Ia mecanique ou des sciences connexes; b) De cooperer, sur sa demande, avec le Comite International des Congres de Mecanique Appliquee, et d'organiser d'autres reunions inter- nationales sur des sujets du domaine de Ia mecanique theorique ou appliquee; c) De prendre toutes autres initiatives propres a contribuer au developpement scientifique de la mecanique theorique ou appliquee.
II
L'organe actif de !'Union Internationale de Mecanique Theorique et Appliquee est son Assemblee generale. L' Assemblee generale a pouvoir de decision pour toutes les questions concernant !'Union, y compris Ia modification des statuts. Elle peut deleguer ce pouvoir pour des sujets specifies a des organes appropries. La composition de l'Assemblee generale est reglee par !'article IV. 21 20 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956
III VI
Des organisations s'occupant d'etudes scientifiques dans le domaine Les reunions de l'Assemblee generate auront lieu aux moments fixes de Ia mecanique theorique ou appliquee (ou des unions nationales de par le Bureau ou sur demande de dix membres au moins de l'Assemblee telles organisations) peuvent etre admises par l'Assemblee generale generale. comme organisations adherentes de !'Union Internationale. Chaque organisation adherente aura des representants a l'Assemblee VII generate de !'Union et paiera une souscription annuelle a !'Union, d'apres les indications de I'article IX. Afin de maintenir son activite dans l'intervalle entre les reunions de l' Assemblee generale, celle-ci nomme un Bureau compose : D'un president, IV Du president sortant, vice-president, D'un secretaire, L'Assemblee generale de I'Union Internationale de Mecanique D'un tresorier, Theorique et Appliquee est formee par : Et de quatre autres membres de l'Assemblee generale. a) Les representations des organisations adherentes a !'Union ; Les membres du Bureau sont elus pour une periode de quatre ans b) Les membres elus par l'Assemblee generale de !'Union, qui au maximum et sont reeligibles. Les membres nouvellement elus entrent doivent etre des personnes s'occupant efTectivement de recherches scien- en fonction le 1 er novembre qui suit 1' Assemblee generale qui les a elus. tiftques dans le domaine de Ia mecanique ou des sciences connexes ; Le Bureau doit se reunir au moins une fois par an. Tout membre du c) Si l' Assemblee generale en decide ainsi, des representants de Bureau peut, en en prevenant par Jettre le secretaire, se faire remplacer Commissions de !'Union. par un autre membre de l'Assemblee generale, s'il lui est impossible de prendre part a une reunion. Le nombre des membres elus de l'Assemblee generale appartenant a Le r6le du secretaire est d'assurer les liaisons permanentes pour tout une meme nationalite ne devra, en general, depasser cinq. Des exceptions sujet interessant !'Union, y compris les relations avec les organisations pourront etre faites seulement par decision de 1' Assemblee generale. adhCrentes ou etrangeres a !'Union. La duree du mandat de chaque membre elu sera fixee par l'Assemblee Le siege legal de J'Union est la residence du secretaire. generate au moment de son election. Le Bureau est autorise a nommer des tresoriers adjoints dans les L'Assemblee generale veillera a ce que soient representes de fa<;on pays ou l'Union a un compte en banque. appropriee les pays dans lesquels sont efTectuees des recherches impor- Les tresoriers adjoints doivent etre membres del'Assemblee Generale, tantes de mecanique theorique ou appliquee, mais dans lesquels n'existe mais ne sont pas necessairement membres du bureau. pas encore d'organisation nationale. VIII v Les moyens financiers de !'Union proviennent : Dans le cas ou il est necessaire d'efTectuer un vote, chaque membre a) Des souscriptions annuelles des organisations adherentes ; de 1' Assemblee generale dispose d'une voix. Tout membre empeche b) Des dons ou subventions. d'assister a une reunion peut, par lettre adressee au secretaire de !'Union, L'Union etablit chaque annee une liste de bienfaiteurs, dans laquelle constituer comme son mandataire un autre membre de 1' Assemblee sont inscrits les noms des personnes ou des institutions qui ont accorde generale. des dons, des legs ou autres subventions a !'Union. Les decisions ordinaires et les elections sont faites a la majorite des Le Bureau de !'Union etablit un budget pour chaque annee et admi- votes exprimes. Pour toute modification des statuts, Ia majorite doit etre nistre les finances. II doit soumettre un rapport financier annuel aux les 2/3 des voix. membres de l'Assemblee generale. Dans l'intervalle entre les reunions de l' Assemblee generate, le vote peut avoir lieu par correspondance sur propositions faites par le Bureau IX (article VII) ; dans ce cas, une decision ne sera valable que si le nombre des personnes participant au vote est au moins les 2/3 du nombre total Le nombre de representants d'une organisation adherente et le des membres de 1' Assemblee generale. montant de Ia souscription annuelle a payer par cette organisation seront 22 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 23
regles d'apres le bareme suivant sur proposition de !'organisation adherente C. Statutes of the International Union of Theoretical et apres approbation de l'Assemblee generale de !'Union. and Applied Mechanics Nombre de Unites de representants souscription annuelle PREAMBLE I 1 1 In order to be more fully equipped to promote development of the II 2 2 science of mechanics, the International Committee for the Congresses III 3 3 of Applied Mechanics at its meeting at Paris in September 1946 decided IV 4 5 v 5 8 to found a permanent organisation, called «The International Union of Theoretical and Applied Mechanics 1), Le montant d'une unite de souscription annuelle sera de$ 50 U.S.A. This Union has been admitted into the International Council of ou son equivalent en monnaie du pays a Ia date du paiement. Scientific Unions by decision of the Executive Committee of this Council in 1947. At the meetings at London in September 1948 it was decided that X the International Committee would continue to organise the Congresses of Applied Mechanics as an independent body as in the past, and that Dans toutes ses decisions, l'Assemblee generale s'inspirera de Ia the International Committee would have the status of an adhering tradition de cooperation scientifique libre et internationale qui s'est organisation of the Union. developpee dans les Congres Internationaux de Mecanique Appliquee. I XI The objects of the International "Cnion of Theoretical and Applied Le present texte franc;ais fera autorite pour !'interpretation :\ Mechanics are: donner aux statuts. a) To form a link between persons and national or international ' organisations engaged in scientific work (theoretical or experimental) in mechanics or in related sciences; b) To cooperate with the International Committee for the Congresses B. Resolution de PAssemblee Generale de Pallanza of Applied Mechanics when requested, and to organise other international meetings for subjects falling within the field of theoretical and applied (27 juin 1950) mechanics; c) To engage in other activities meant to promote development of mechanics, both theoretical and applied, as a branch of science. En confirmation des opinions exprimees precedemment a 1' Assemblee generale de septembre 1948 au moment oil Ies presents statuts ont ete II adoptes : 1. L'Assemblee generale estime que, dans les pays ou il existe plus The active organ of the International Union of Theoretical and d'une organisation nationale active dans le champ de la mecanique Applied Mechanics is its General Assembly. theorique et appliquee, un comite special de coordination doit etre The General Assembly has power to decide all questions affecting forme. En general, i1 est convenu de reconnaitre seulement une organi- the Union, including alteration of the statutes. On specified question sation adherente dans chaque pays ; it may delegate this power to appropriate bodies. 2. L' Assemblee generale estime que sa composition devra etre The composition of the General Assembly is regulated in Article IV. graduellement modifiee de fac;on a ce qu'elle comprenne principalement les representants des organisations adherentes a !'Union, Ia categorie des membres elus devant etre n!servee pour des cas particuliers et excep- III tionnels. Dans ce but, elle donne avis de son intention de reduire le nombre des membres elus lorsque, en 1952, ils seront arrives au terme Organisations occupied in scientific work in theoretical or applied de leur mandat. mechanics (or national unions of such organisations) can be admitted 24 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 25
by the General Assembly as adhering organisations of the International VII Union. Each adhering organisation shall have representatives in the General In order to carry out work between the meetings of the General Assembly of the International Union, and pay an annual subscription Assembly, the latter appoints a Bureau, consisting of: to the Union in accordance with Article IX. A president, The retiring president, who shall serve as vice-president, IV A secretary, A treasurer, The General Assembly of the International Union of Theoretical \ And four other members of the General Assembly. and Applied Mechanics is composed of: The members of the Bureau will be elected for a period of at most 4 years and will be eligible for re-election. Newly elected members. of a) Representatives of the organisations adhering to the Union; the Bureau enter into office on the date of November tst, followmg b) Members elected by the General Assembly of the Union, who the General Assembly at which they have been elected. shall be persons actually engaged in scientific work in mechanics or The Bureau will meet at least every year. A member of the Bureau in related sciences; who is prevented from attending a meeting may by a letter to the c) If so decided by the General Assembly, representatives of Com- secretary designate another member of the General Assembly to replace mittees. him. The number of elected members of the General Assembly of the The function of the secretary will be to act as a permanent centre same nationality in general should not exceed five. Exceptions can for matters aflecting the Union, including relations with adhering or be made only by decision of the General Assembly. The term of each outside organisations. elected member shall be determined by the General Assembly at the The legal domicile of the Union shall be the place where the secretary time of his election. lives. The General Assembly shall provide for adequate representation The Bureau is authorized to appoint assistant-treasurers in those of countries where important research is carried out in theoretical or countries where the Union has a bank account. applied mechanics, but where a national organisation does not yet exist. The assistant-treasurers must be members of the General Assembly but need not to be members of the Bureau. v VIII When voting is necessary every member of the General Assembly shall dispose of one vote. Any member who may be unable to attend The financial means of the Union are formed by: a meeting may by a letter to the secretary constitute another member J a) The annual subscriptions of the adhering organisations; of the General Assembly as his proxy. 4 b) Gifts and grants. For ordinary decisions and for elections a simple majority of the The Union shall maintain a roll of benefactors on wich shall be votes brought forward is required. For an alteration of the statutes inscribed annually the names of those persons or institutions which have the majority required is 2/3 of the votes brought forward. accorded gifts, legacies or other subventions to the Union. Between meetings of the General Assembly voting may be carried The Bureau of the Union shall draft a budget for each coming year, out by correspondence upon proposals made by the Bureau (section VII); and shall administrate the finances. The Bureau shall submit an annual in this case decisions will be valid only provided the number of persons financial report to the members of the General Assembly. taking part in the vote is not less than 2/3 of the total membership of the General Assembly. IX
VI The number of representatives of an adhering organisation and the amount of the annual subscription to be paid by that organisation will Meetings of the General Assembly will take place at times decided be regulated according to one of the following categories, as proposed by the Bureau (section VII) or on request of at least 10 members of the by the adhering organisation and after approval of the General Assembly General Assembly. of the Union: 26 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 27
Number of Units of Secretary: Professor W. T. Koiter, Prof. Mekelweg 2, Delft. Trea- representatives annual subscription surer: Professor G. K. Batchelor, Cavendish Laboratory, Univer- I 1 1 sity of Cambridge, Cambridge. II 2 2 Representative: Professor W. T. Koiter. III 3 3 2. The Royal Society of London (1948). Assistant Secretary: Dr. IV 4 5 D. C. Martin, The Royal Society, Burlington House, Piccadilly, v 5 8 London W. 1. Representatives: Professor M. J. Lighthill, Depart- The amount of the unit annual subscription will be $ 50 U.S.A. or ment of Applied Mathematics, The University, Manchester 13. its equivalent in local currency at the date of payment. Professor G. Temple, The Mathematical Institute, 10 Parks Road, University of Oxford, Oxford. ; X Sir Arnold Hall, Technical Director, Hawker Siddeley Group Ltd, 18, St-James's Square, London, S. W. 1; In all its decisions the General Assembly shall be guided by the Professor W. J. Duncan, The University, Glasgow, W. 2, Scotland. tradition of free international scientific cooperation which has been 3. The Hungarian Academy of Sciences, Budapest (1948). General developed in the International Congresses for Applied Mechanics. Secretary: Professor G. Alexits, Magyar Tudomayos Akademia, Akademia Utea, Budapest. XI Representative: Dr. E. Reuss. 4. Le Comite National de Mecanique (1949), 19, rue Blanche, The French text of the statutes (of which the above is a translation) Paris IXe; shall be considered to be the authoritative text. President: M. le Professeur H. Villat; Secretaire General du Comite : M. Maurice Roy; D. Resolution of the General Assembly at Pallanza Representants: M. Henri Villat, 47, boulevard Auguste-Blanqui, Paris XIIIe; 27 (June 1950) M. Albert Caquot, 1, rue Beethoven, Paris XVIe; M. Maurice Roy, 55, bd Malesherbes, Paris VIIIe; In confirmation of the views already expressed at the General Assembly of September 1948 when the present statutes were framed: 5. The National Committee on Theoretical and Applied Mechanics 1. The General Assembly expects that in those countries where I of the Czechoslovak National Council of Researches (Ceskoslovenska more than one national organisation is active in theoretical and applied narodni rada badalteska) (1949), Opletalova, 19, Praha II.; mechanics, a national coordinating committee will be formed. In general Representative: M. Zdenek Horak, Secretary of the Committee, it is expected to recognize only one adhering body in each country; Professor of Physics, Technical University, Karlovo nam. 13, 2. The General Assembly believes that a gradual transition should Praha II. be made in its composition, so that ultimately it will consist mainly 6. The National Committee on Theoretical and Applied Mechanics of representatives of organisations adhering to the Union with the category of the Norwegian Academy of Science and Letters (Det Norske of elected members reserved for exceptional and unusual cases. To Videnskaps-Akademi i Oslo) (1949), Drammensveien, 78, Oslo. this end it gives notice of its intention to reduce the number of elected Representative: Prof. Dr. R. Gran Olsen, Norges Tekniske Hegskole, members when the terms of the present elected members expire in 1952. Trondheim. 7. Consiglio Nazionale delle Ricerche (1949), Piazzale delle Scienze, E. Organisations adherentes 7, Roma. President et representant: M. le Professeur G. Colonnetti. et membres de I'Assemblee Generale (31 octobre 1956) 8. Le Comite National de Mecanique Theorique et Appliquee de la Classe des Sciences de I' Academie Royale de Belgique (1949). Pre- a) Organisations adherenfes et represenlanls : sident: le Baron Ch. J. de Ia Vallee Poussin - Louvain. Vice Pre- sident : M. Ch. Hanocq, Liege. Secretaire: M. F. H. van den Dungen, 1. International Committee for the Congresses of Applied Mechanics. 41, avenue de l'Arbalete, Boitsfort, Bruxelles. (1948) President: Professor C. B. Biezeno, Nieuwe Laan 30, Delft. Representants: M. L. Baes, 38, rue Emile-Bouillot, Ixelles-Bruxelles; 28 UNION INTERNATIONAL£ DE MECANIQUE THEORIQUE ET APPLIQUEE HAPPORTS 1954-1955-1956 29
M. A. Coppens, 106, rue Marie-Therese, Louvain; Representatives : Professor Dr. H. Gortler, Sonnhalde 90, Freiburg M. F. H. van den Dungen. i. Br; 9. The U. S. National Committee on Theoretical and Applied Mecha- Professor Dr. R. Gramme!; nics (1949). Secretary: Col. C. E. Davies, Room 1101,29 West 39th Professor, Dr. A. Walther, Institut fiir Praktische Mathematik, Street, New-York 18, N. Y. Technische Hochschule, 16 Darmstadt. Representatives: Professor N. J. Hoff, Polytechnic Institute of Brooklyn, Head of the Department of Aeronautical Engineering 16. Israel Society for Theoretical and Applied Mechanics (1950). Pre- and Applied Mechanics, 99 Livingston St., Brooklyn 1, New-York; sident and Representative: Professor Dr. M. Reiner, Technion, Professor A. T. Ippen, Professor of Hydraulics, Director of the Haifa. Hydrodynamics Laboratory, Massachusetts Institute of Techno- 17. Instituto Nacional de Tecnica Aeronautica u Esteban Terradas n logy, Cambridge, Massachusetts.; (1950), Serrano 43, Madrid. Dr. F. N. Frenkiel, Head, Theoretical and Applied Mechanics Group, Representants: Sr. Antonio Nunez, Directorio General del I.N.T.A., Applied Physics Laboratory, The Johns Hopkins University, 8621 Serrano 43, l\1adrid; Georgia ave., Silver Spring, Massachusetts; Sr. A. Perez-Marin, Secretario General y Tecnico del I. N.T.A., Professor R. D. Mindlin, Columbia University, New-York 27, New- Serrano 43, Madrid. York; Professor N. M. Newmark, Talbot Laboratory, University of 18. Die Oesterreichische Akademie der Wissenchafften (1951), Dr. Illinois, Urbana, Illinois. Ignatz-Seiperplatz 2, Wien. President: Professor Dr. Richard Meister. Secretary: Professor Dr. Johann Radon. 10. The Academy of Technical Sciences of Denmark (Akademiet for Representative: Professor Dr. Karl Federhofer, Technische Hochs- de Tekniske Videnskaber) (1949), Oster Voldgade 10, Kebenhavn K. chule Kopernikusgasse 24, Graz. President: M. P. Christensen. Secretary: M. V. Marstrand; Representative: Professor J. L. Mansa, A-S Titan, Tagensvej 86, 19. The National Committee for Theoretical and Applied Mechanics Kebenhavn N. of the Science Council of Japan (1951), Ueno Park, Tokyo. President: 11. The Swedish National Committee for Mechanics (1950), Box 5073, Dr. Fujio Nakanishi, Professor of Mechanical Engineering, Uni- Stockholm 5. President: Professor Waloddi Weibull, Bockamollan, versity of Tokyo, Tokyo. Representatives: Professor Fumio Tamaki, Institute of Industrial Brosarps St ation. Secretary: M. G. Ljungberg. Swedish Academy of Engineering Science, Stockholm 5. Science, University of Tokyo, Chiba-City. Professor Yoshikazu Sawaragi, Kyoto University, Sakyo-ku, Representative: Professor F. K. G. Odqvist, The Royal Institute I of Technology, Stockholm 70. Kyoto. Dr. Shoji Ikeda, Lecturer of Tohoku University, Sendai. 12. The Turkish Society for Pure and Applied Mathematics (1950). 20. Le Comite National de liaison avec l'IUTAM du Conseil des Aca- 13. The Ministry of National Reso urces and Scientific Research, Go- demies de Ia RFP de Yougoslavie (1952). verment of India, New-Delhi (1950). Central Secretariat: Sir Shanti Representant: Professor Dr. Ing. Anton Kuhelj, Institut de Meca- Swaroop Bhatnagar, F. R. S., Secretary, and Mr. D. D. Gupta, nique, Lepi pot 13, Ljubljana. Under Secret ary. Representatives: Dr. S. R. Sengupta, Principal of the Bengal 21. De Nederlandse Commissie voor Theoretische en Toegepaste Mecha• Engineering College, Shipbur, P. 0. Botanic Garden, District nica (Netherlands Committee for Theoretical and Applied Mecha- Howrah, India; nics) (1952). President: Professor 0. Bottema, Delft. Secretary: Dr. V. Gadambe, Assistant Director National Physical Laboratory, Professor R. Timman, Delft. Hill Side Road, New-Delhi. Representative: Professor C. B. Biezeno, Nieuwe Laan 30, Delft. 14. L'Ecole Polytechnique Federale, Zurich (1950). 22. The Finnish National Committee on Mechanics (1952). Representant: Professor Dr. Hans Ziegler, Eidgenossische Tech· President and Representative: P rofessor S. E. Stenij, Finland's nische Hochschule, Zurich. Institute of Technology, Helsinki, Kulosaari. 15. Die Gesellschaft fur angewandte Mathematik und Mechanik, 23. Polskiej Akademii Nouk (1952). Secretary: S. Zolkieweski. Stuttgart (1 950). President: Professor Dr. R. Gramme!, Technische Representatives: Professor Michal Lunc, Polska Akademia Nauk, Hochschule Stuttgart, Robert-Boschstr. 101, Stuttgart N. Warszawa, Palac Kultury i Nauki. RAPPORTS 1954-1955-1956 31 30 UNION INTERNATIONALE DE :\Ul:CANIQUE THEORIQUE ET APPLIQUEE
Professor W. Nowacki, Polska Akademia Nauk, Warszawa Palac Sir Richard V. Southwell, Imperial College, The Oldshouse, Trumpington, Kultury i Nauki; ' Cambridge, Grande-Bretagne. Professor W. Olszak, Membre de l'Academie Polonaise des Sciences, Sir G. I. Taylor, Farmfield, Huntingdon Road, Cambridge, Grande-Bre- classe IV, Warszawa, Palac Kultury i Nauki. tagne. Professor S. P. Timoshenko, 536 W. Crescent, Palo Alto, California, 24. Comite National l'U.R.S.S. de Mecanique Theorique et Appliquee, U.S.A. Moscou D-40, Lemngradskoe ch. 9, Institut de Mecanique de l'Aca- Professor Waloddi Weibull, Bockamollan, Brosarps Station, Suede. demie des Sciences _de (1956). Secretaire Scientifique : Professor G. K. l\1lkhallov, Moscou D-40, Leningradskoe ch. 9 Institut de Mecanique de l'Academie des Sciences de l'U.R.s.s: F. Bureau de I'Union Representants: Professor N. Muskhelishvili, rue Dzerjinski 8 - President d'I-Ionneur de l'Union : Theodore von Karman. Tbilissi; ' Les Membres suivants du Bureau ont ete elus pour la periode Professor V. V. Sokolovskii, Membre-correspondant de 1' Academie 1 er novembre 1952 - 31 octobre 1956; des Sciences de l'U.R.S.S. Institut de Mecanique de l'Academie President : H. L. Dryden. des Sciences de l'U.R.S.S. Moscou, D-40, Leningradskoe ch. 9.: Vice-President : J. Peres. Professor L. I. Sedov, Moscow University, Zona U, 84 Leninskie Secretaire : F. H. van den Dungen. Gory, Moscow B-234; Tresorier : G. Temple. Professor A. A. Il'ushin, Institut de Mecanique de l'Academie Membres : J. M. Burgers, Kerim Erim (*), R. Gramme!, F . K. G. des Sciences de l'U .R.S.S., Moscou D-40, Leningradskoe ch. 9; Odqvist, S. Goldstein (**). Professor A. A. Nikolskii, Institut de Mecanique d:! !'Academie des Sciences de l'U.R.S.S., Moscou, D-40, Leningradskoe ch. 9. Adresse du Secretariat : 41, avenue de l'Arbalete, Boitsfort-Bruxelles (Belgique). 25. de Mecanique de de la R.P.R., Bucarest (1956). Representant: Professor Ehe Carafoh, Institut de Mecanique Appli- quee, rue Const.-Mille, N° 15, Bucarest. G. Representation de 1'1 UTAM d I' Assemblee Generale de I'Union Mathematique lnternationale, tenue d La Haye, 31 aoOt et Jer septembre 1954 ' b) Membres elus par l'Assemblee Generate pour la periode 1952-1956 : Professor J. Ackeret, Institut fiir Aerodynamik; Eidgenossische Technis- Le Professeur J. M. Burgers a assiste a cette Assemblee comme che Hochschule, Sonneggstrasse 3. Zurich, Suisse. delegue de l'IUTAM. Dr. J. M. Burgers, Institute for Fluid Dynamics and Applied Mathematics rapport detaille de 1' Assemblee generale a ete prepare par le University of Maryland, 4622 Knox Road, apt. 7, College Park: Secretaire de l'IMU, le Professeur E. Bompiani. Les pays adherents a Md, USA. I'IMU sont actuellement les suivants : Professor G. A. Crocco, Via Alessandro Torlonia 25, Roma, Italie. Argentine, Australie, Autriche, Belgique, Bresil, Canada, Cuba, Dr. H. L. Dryden, Director, National Advisory Committee for Aero- Danemark, Finlande, France, Allemagne, Grande-Bretagne, Grece, nautics, 1512 H Street, Northwest, Washington 25 D. C., USA. Islande, ltalie, Japon, Mlaya-Singapore, Mexique, Pays- Professor H . Favre, Professeur a !'Ecole Polytechnique Federale, Ins- Bas, Norv7ge, Pakistan, Portugal, Espagne, Suede, Suisse, Etats-Unis, titut d'Aerodynamique, 242, Witikonerstr., Zurich, 7, Suisse. Y ougoslavie. Professor S. Goldstein, The Division of Engineering and Applied Physics, . La cotisation unitaire annuelle payee a l'IMU par les organismes Pierce Hall, Harvard University, Cambridge 38, Massachusetts nationaux est $ 65,20 ; le nombre total d'unites payees a present est de , 73, de sorte que le revenu propre de !'Union ( a !'exclusion des subven- Dr. Th. von Karml'm, California Institute of Technology, 1202 East tions de !'UNESCO) s'eleve a $ 4749, 60. California St., Pasadena, zone 4, California, U.S.A. La Commission des symboles mathematiques a ete supprimee. Professor Y. H. Ku, University of Pennsylvania, 200 S. 33rd. St., Phi- Les Corr.ml:issions pour la diffusion de la connaissance mathematique ladelphia 4, Pa, U.S.A. et la CommiSSIOn pour la documentation ont ete reunies en une seule Professor . J. Peres, Membre de l' Institut, Doyen de la Faculte des Commission des Publications Scientifiques, qui preparera un rapport Sciences de Paris, 1, rue Victor-Cousin, Paris ve, France. Professor Kyrill Popoff, boulevard Lenin 15 a, Sofia, Bulgarie. (•) DE!cMElle 28 decembre 1952. Professor W. Rubinowicz, Hoza 74/4, Warszawa, Pologne. (••) Elu le 1•• fE!vrler 1954. 32 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 33 general sur l'emploi des principaux symboles mathematiques. Dans ce Ce colloque constituait Ia premiere reunion internationale sur un but elle pourra se mettre en rapport avec toute organisation internationale sujet dont le developpement a ete considerable dans Ies vingt ou trente qui s'occuperait de l'usage des symboles mathematiques dans les appli- dernieres annees dans tous les pays. cations a Ia technique. La en dehors des services pratiques qu'elle rend Le statut de Ia Commission Tntcrnationale de l'Enseignement mathe- pour .Ia det ermmatwn des contraintes et le calcul precis des pieces, matique a ete revise. constitue une methode d'investigation precieuse, capable de guider et E n ce qui concerne le projet de reorganisation du Conseil Inter- de controler Ia theorie des deformations elastiques dans les solides. national des Unions Scientifiques propose par le Professeur von Muralt, .. Un role pent joue dans le domaine particulierement il a ete decide de faire connaitre a I' ICSU que cette reorganisation ne do it dehcat des phenomenes plastJques et un certain nombre de travaux pas etre efiectuee sans une etude plus approfondie. ont tente de jeter les bases d'une (( photoplasticite », ce qui incitait a Le Professeur Burgers a exprime le desir de l' IUTAM de cooperer adjoindre celle-ci au programme. avec l'IMU dans leurs domaines communs. II espere que la question des Le colloque s'est t enu a l'Universite Libre de Bruxelles, les 29 30 symboles ne sera pas totalement abandonnee, et que, des qu'elle sera et 31 juillet 1954. ' reprise, notre Union en sera avertie (par exemple par l'intermediaire Le Comite Scientifique d'organisation comprenait : MM. Le Boiteux du Professeur G. Temple, qui appartenait a l'ancienne commission de (Paris) President, Favre (Zurich) et Hetenyi (Evanston, Illinois). l'JMU et qui est Tresorier de notre Union). II a indique qu'une coope- Le succes de cette manifestation a ete tres vif et les specialistes ration des deux Unions serait egalement possible en ce qui concerne la de tous les pays ont apprecie !'occasion qui leur etait ainsi fournie pour formulation de programmes de calcul pour les machines modernes de la premiere fois, de se trouver rassembles. ' calcul mecanique. II espere qu'aussitot que l'IMU s'occupera de ces Au total, 36 communications ont ete presentees qui se repartissent questions, elle avertira notre Union et nous fera parvenir une invitation entre les sujets fondamentaux suivants : a cooperer a ses travaux. II va de soi que si une question analogue se a) Applications pratiques nouvelles de la photoelasticite. presente dans notre Union, l'IUTAM demandera egalcment Ia cooperation b) Developpement des methodes et des appareils. de l'IMU. c) Problemes tridimensionnels. L'Assemblee generale de l'IMU a adopt e Ia resolution suivante : (( L'Assemblee generale demande au Comite Executif (de l'IMU) d'etudier, d) Phenomenes dynamiques. en collaboration avec I' IUTAM, l'opportunite de faire a l'ICSU Ia propo- e) Extension aux deformations irreversibles (photoplasticite). sition de nommer une Commission mixte de l'IMU et l'IUTAM chargee des Le comite d'organisation avait pu obtenir de tous les conferenciers activites d'interet commun, et de prendre toutes initiatives appropriees ». d'un substant!el resume de leur texte qu'il a ete possible Une autre resolution adoptee ayant trait au Centre International de d1stnbuer, sous forme roneotypee, avant Ies reunions, facilitant ainsi de Calcul est Ia suivante : cc L'Assemblee generate decide que le Comite Ia comprehension des textes prononces dans les diverses Iancrucs autorisees. Executif devra etudier les relations entre I' IMU et le Centre Interna- De tres interessantes discussions ont suivi chaque tional de Calcul, quand il sera cree legalement, et les realiser de son et de tres larges echanges de vues ont eulieu entre specialistes des questions mieux ». traitees. Le Congres International des Mathematiciens a ete tenu a Amsterdam, Au cours des trois journees du colloque, six seances de travail ont du 2 au 9 septembre 1954. Le Congres snivant aura lieu a Edimbourg permis, en respect ant un horaire tres strict ement minute, de presenter en 1958. dans l'ordre les communications dont on trouvera ci-dessous Ia liste : 1. Dr Ing. R. Hiltscher, Giitebeurteilung spannungsoptischer Modell- H. Compte-rendu werkstoffe. du Colloque de Photoelasticite et Photoplasticite 2. Dr West, Residual Orientation Birefringence in Inorganic Glasses. (Bruxelles 1954). 3. Dr Ing. A. Angioletti, Applicazioni della fotoelasticita all esame di articoli di Gomma. Lors de sa reunion generate, tenue a !'occasion du se·congres Inter- national a Istamboul en 1952, le Conseil de l'IUTAM avait decide !'orga- 4. Prof. Dr M. Hetenyi, Yield Patterns in Nylon Specimens. nisation, pour 1954, d'un colloque consacre a Ia Photoelasticite et a 5. Dr .L. Foppl, iiber neuere Arbeiten aus dem spannungs- son prolongement, Ia Photoplasticite. optischen Laboratormm der Technischen Hochschule Miinchen. 34 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 35
6. Prof. D. C. Drucker, Equipment of the Brown Photoelastic Labo- 25. Prof. M. Frocht, The General Solution on the Three-Dimensional ratory and some Current Studies. Photoelastic Problem. 7. Dr R. Baud, Quellen bzw. Schwinden von BeHi.gen. 26. Prof. Mindlin, Mathematical Theory of Three-Dimensional Photo- elasticity. 8. Prof. H. T. Jessop, Notes on some Investigations at the Photo- elastic Laboratory University. 27. Prof. E. Orowan, Refractometric Surface Stress Measurement. 9. Prof. J. Foch, L' extensometrie photoelasticimetrique. 28. Prof. E. K. Frankl, Photoelastic apparatus for the study of dyna- mic Stresses in gears. 10. Dr R. B. Heywood, A note on the significance of stress Concen- tration Factors. 29. Prof. M. Frocht, Studies in Dynamic Photoelasticity. 11. Prof. L. C. Baes, De !'incidence de la photoelasticite sur le con- 30. Prof. M. Hetenyi, A novel method of Recording High Speed Pheno- trOle des methodes de calcul des systemes plans hyperstatiques. mena. 12. Ing. R. C. Boiten, Photo-elastic investigation of armoured 31. Prof. E. K. Frankl, Stress-optic relations for inelastic behaviour. with an application to bending bars with cracks on the tensile 32. Prof. H. Le Boiteux, Etude sur le comportement optique du Plexi- side. glas dans le domaine plastique. 13. Prof. Pietro Locatelli (presente par le Prof. Grandore), Recherche Photoelastique des contraintes derivees du poids propre dans les 33. Prof. R. Hiltscher, Studien zur Untersuchung elastoplastischer Spannungszustande im spannungsoptischen Modellversuch. structures planes. 14. Prof. Dr H. Favre, Quelques applications recentes de la methode 34. lng. West, Geometry of Plastic Bending deduced from Mono- crystal Corundum. purement optique a l'etude des plaques flechies. 15. Prof. C. Mesmer (presente par le Dr G. Drouven), The Moire screen 35. Dr. Ing. E. Monch, Die Dispersion der Doppelbrechung als Mass fiir die Plastizitat. ' Method lsopachic Lines. 16. Prof. A. Pirard, Sur quelques etudes photoelastiques au service 36. Prof. D. C. Drucker, Plastic and Elastic Strain in Metal determined with an Elastic Birefringent Coating. de l'industrie. 17. Ing. Dr A. J. Durelli, Stress Distribution in Square Plates with Une brochure contenant le resume de toutes les communications Hydrostatically Loaded Central Holes. presentees a ete editee en mai 1955, a Bruxelles, par les soins de l'Uni- versite Libre avec le concours du Secretariat de l'Union Internationale 18. Prof. C. Vreedenburgh (pn\sente par M. F. K. Ligtenberg), Some de Mecanique et de !'UNESCO. special photoelastic Investigations and their practical Interpretation. H. Le Boiteux. 19. Ing. C. Benito, Travaux eflectues au Laboratoire d'essai de Madrid. 20. Dr. R. V. Baud, Uber einige an der EMPA ausgefllhrten, photo- I. Colloquium on fatigue (Stockholm, May 1955) elastischen Untersuchungen unter besonderer Beriicksichtigung jener mit besonders gearteten Randbedingungen. Upon the request of the International Union of Theoretical and Applied Mechanics the Swedish National Committee for Mechanics 21. Ing. Pal M. Ballet, Sur !'utilisation de l'araldite dans la methode organized a colloquium on fatigue, which was held at the Royal Institute de figeage des contraintes. of Technology in Stockholm, May 25-27, 1955. 22. M. Aubaud (ONERA) (presente par le Prof. Le Boiteux), 35 lectures were delivered, principally dealing with problems of photoelasticimetrique d'une entaille tridimensionnelle en torsiOn. statistical and basic nature. Among the topics were to be found statis- tical theory of fatigue, cumulative damage, mechanism of fatigue, metal- 23. Dr. M. Nisida, Some Improvements in << Stress Freezing >> Photo- lurgical aspects of fatigue, velocity of fatigue cracks, fatigue at elevated elastic Technique. temperature, and fatigue at combined stresses. 24. Prof. H. T. Jessop, Some new Techniques in Three-Dimensional Lectures were going on simultaneously in two sections. Each Photoelastic stress explorations, lecturer had 15 minutes for presentation of his communication, and RAPPORTS 1954-1955-1956 37 36 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE
afterwards 15 minutes were reserved for discussion. Summaries of the USA W. N. Findley, A. M. Freudenthal, P. Kuhn, lectures were distributed about a month before the colloquium. F. A. McClintock, R. E. Peterson, J. T. Ransom, The colloquium was attended by 147 participants from the follow- F . R. Shanley. ing countries: Denmark (1), Finland (2), France (5), Germany (6), Italy (2), Netherlands (2), Norway (2), Poland (2), Saar (1), Spa!n (3), Sweden J. Colloquium on Deformation and Flow in Solids (98), Switzerland (1), United Kingdom (10), USA (8), USSR (3), and Yugoslavia (1). . . (Madrid, 26-30 sept. 1955) To cover part of the travelling expenses and subs1stance of parti- cipants the IUTAM Bureau granted an amount .of $3500. To In a meeting in Brussels on September 21, 1953, the Bureau of this the Swedish government and mdustry added the eqmvalent of the International Union of Theoretical and Applied Mechanics (IUTAM) $ 1500 for publications and administration purposes and for entertain- decided to organize a Colloquium on Solid State and Plasticity (provi- ments. sional title) during the last week of September 1955. Following an The Proceedings of the Colloquium containing unabriged versions invitation delivered personally by Don A. Nunez and Don A. Perez- of the lectures and discussions will be published by Springer-Verlag, Marin, the representatives of the Spanish adhering organisation, Insti- Berlin. tuto Nacional de Tecnica Aeron{tutica cc Esteban Terradas » (INTA), The members of IUTAM and participants of the Colloquium are Madrid was chosen as location of the Colloquium. entitled to buy the Proceedings with 25 percents reduction directly The Scientific Committee named by the Bureau of IUTAM to plan from the publisher. this Colloquium consisted of R. Gramme!, chairman, and Th. von Karman, Maurice Roy and G. I. Taylor, members. The Spanish Organizing Comiie cl'Organisation Committee was formed by A. Nunez and A. Perez-Marin with a staff of technical and administrative collaborators. President Prof. W. Weibull. Each Session devoted to the particular topics (Dislocations and Vice-President : Prof. F. K. G. Odquist. Plasticity; Non-linear Elasticity; Viscoelasticity and Relaxation) was Secretaires : Civilingenji.:ir G. Wallgren, Civilingenjor A. Isaks- introduced by a General Lecture. The full titles of the papers may ' son. be in the list. Membres Overdirektor 0. Forsman, Overingenjor S. For- The sessions of September 26, 27, and 29 were held at the Consejo nander, Civilingenjor C. Schaub. Superior de Investigaciones Cientiflcas in Madrid, t he session of Sep- tember 28 in Torrej6n de Ardoz, connected with a visit to the labora- Lisle des Auteurs tories of INTA at this place. UNESCO contributed a sum of $4000 to the travelling expenses Allemagne E. Gassner, M. Hempel, E. Seibel, F. Wever. of participants of the Colloquium. In a most commendable manner Danemark : P. E. Wiene. INTA covered the expenses connected with the local organisation of FinIande : J. Salokangas. the Colloquium. The participants also enjoyed the generous hospitality of INTA on the occasions of a reception and dinner on September 26 France : F. Bastenaire, R. Cazaud-F. Bastenaire-M. Weisz, R. Jacquesson, A. Kammerer. in Madrid, of a lunch in Torrcj6n on September 28, and of a trip to El Escorial with visit to the famous Monasterio, with lunch and an excursion Grande-Bretagne : J. Clayton-Cave, R. B. Heywood, C. E. Phillips, to the Valle de los Caidos on September 30. The Scientific Committee D. G. Sopwith, E. W. C. Wilkins. wishes to express its sincere gratitude to U ESCO and to INTA for Italie F. Gatto, L. Locati, U. Rosetti. all their support. Norvege : R. Gran-Olsson. The Colloquium on Deformation and Flow of Solids has fully ful- Pays-Bas : F. J. Plantema. filled its main object, namely to bring together two groups of scientists Sarre : P. Laurent. which hitherto had but little connection with each other and hardly : A. Fransson, A. Johansson, 0. Lissner, C. Schaub, knew of the met hods used in the other field: solid state physicists and Suede research workers in the field of mechanics. Their future cooperation W. Weibull. appears to be essential for further progress. Suisse L. Martinaglia. URSS : I. A. Oding, A. S. Petrusevich, F. V. Uchik. R. Gramme!. RAPPORTS 1954-1955-1956 39 38 UNION INTERNATIONALE DE MECANIQUE THEORIQUE ET APPLIQUEE 3. Viscoelasticity and Relaxation. LIST OF AUTHORS AND TITLES General lectures
1. Plasticity and Dislocation. Prof. Dr. F. Schultz-Grunow (Germany), Viscositat und Zeitwirkungen im nichtlinearen Bereich. General lectures Prof. Ma. Biot (USA), Variational and Lagrangian methods in visco- rof Sir G 1. Taylor, F. Rs, Strains in polycristallin materials. . elasticity. A. Seeger (Germany), Methoden und physi- kalische Ergebnisse zur Knstallplastlzitat. . . Special lectures p f p G Hodge J r. (USA), Theory of ideal Plasbc1ty. Cottrell, F. Rs (UK), Dislocation in Crystals. Dir. H. Le Boiteux (France), Viscosite et deformation irreversible. A. H. Prof. Dr. I. A. Oding (URSS), Ansammlung der Beschiidigungen beim Kriechen. Special lectures Prof. J. G. Oldroyd (UK), The effects of small viscous inclusions on In . Ch. Crussard (France), Le& de des the mechanical properties of an elastic solid. gf B J 1 (France) L'influence des JOmts mtergranula1res sur Pro. . aou , Dr. W. P. Mason (USA), Dislocation Relaxations in Metals and crystals l'ecrouissage des metaux. . . 1 and the Determination of the Limiting Shearing Stress. Prof E H. Lee (USA), Wave propagation in an .elastic s. r G Leibfried (Germany), Versetzungen und K. Report on the Ninth International Congress N. F. Mott (UK), Dislocation models for plastic flow and work- of Applied Mechanics. hardening. · M t 1 (5-13 september 1956, Brussels) R L 0 (USA) Dislocations and Fracture m e a s. Dr. GT. . : d: Cros (France) La Structure feuilletee dans les poly- The Ninth International Congress of Applied Mechanics, organized log. eiSSier ' 'f t' l t 'que ·staux son role au cours de Ia de orma wn pas 1 · under the sponsorship of the International Committee for the Congresses Pro/;;. c. Frank, F. Rs (UK), Genesis of dislocation in crystals grown of Applied Mechanics, was held in Brussels from 5 to 13 September 1956. By a decision of the International Committee the scope of the Congress from the smelt. . PI t ' 'd d elasco de Pando (Spain), Una nueva teona de. as. 1:1 a . . was reduced compared to previous Congresses by excluding the science Prof. V H ki (UK) The theory of non-hardemng ngid-plasbc of Thermodynamics, for which adequate provision is made by other Dr. M. G. op ns , Congresses, and by excluding papers on numerical methods except as plates under transverse load. d t 1 Dr. H. G. van Bueren (Holland), Magnetoresistance in deforme me a s these occur in discussion of specific physical problems. No opposition caused by dislocations. to this decision was apparent at the Brussels Congress, and it may be expected that future Congresses will also be limited to fluid mechanics and solid mechanics. 1. Non-linear Elasticity. At the invitation of the International Committee four general lectures were given by outstanding younger scientists: General lectures Professor P. Germain, Faculte des Sciences, Lille, France : D H Kauderer (Germany), Ein nichtlineares Elastizitatsgesetz ; Auf- (( Quelques progres recents en aerodynamique theorique r. und Anwendungsmoglichkeiten. . . . des grandes vitesses ». Large elastic deformatwns m rubberlike Professor R. Hill, University of Nottingham, UK:<< New horizons E (UK) L. R. G. Tre1 oar •sq • in mechanics of solids >>. materials. Professor M. K. Davidson, Stevens Institute of Technology, Hoboken, USA: « Ships ». Special lecture Professor H. Melller, Technische Hochschule, Karlsruhe, Ger- Prof. M. s. Plessett (USA), On the mechanism of cavitation damage m any: « Forced non-linear vibrations of elastic bodies >>. On a recommendation by the International Committee it was Miscellanea decided not to hold simultaneous primary sessions of the two sections Prof. E. Volterra (USA), Some Applications of the Method of Constrained of the Congress, viz, Fluid Mechanics and Solid Mechanics, The local Elasticity to Dynamic Problems. 40 UNION INTERNATIONALE DE MECAN IQUE THEORIQUE ET APPLIQUEE RAPPORTS 1954-1955-1956 41
Organizing Committee was assisted. in the s.creening of I?apers for presen- L. Publications tation at primary sessions by an mternatwnal Committee of Referees, consisting of Professors G. K. Batchelor, J. M. R. a) Rapports annuels. A. E. Green, J. L. Mansa, J . Peres, W. Prager, A. Signonm and H. Ziegler. Rapport septembre 1948. In spite of the reduced scope of the Ninth Congress the overwhelm- Rapport 1949 (epuise). ing number of papers submitted and accepted (more than 500) n.eces- Rapport 1950. sitated two secondary sessions of each section which were held Simul- Rapport 1951. taneously with primary sessions of the other section. the time Rapport 1952. for presentation of a paper had to be very short (20 mmutes fo.r papers Rapport 1953. in primary sessions with an additional 10 for Rapport 1954-1955-1956. 15 minutes for papers in secondary sessions with a general discussion at the end of the session). The obvious drawbacks of so large a number b) Par la Commission sur l'amortissement interne des materiaux : of contributions were reduced to a minimum by the Organizing Com- 1. Research Progress in U.S. on the Damping of Vibratio.ns (March 31 mittee in its skilful grouping of papers for each. 1951). , The complete Proceedings of the Congress will be published m eight volumes, two of which have already been complet ed. 2. Forschung im Gebiet der Schwingungdiimpfung fester Korper The Concrress was attended by nearly 800 scientists, many of whom Im deutschen Sprachgebiet (1938-1950) . were by members of their family. It took place in the c) By the U.S. National Committee on Theoretical and Applied buildings of the Universite Libre de Bruxelles. All members are greatly Mechanics: indebted t o the Organizing Committee (President: Professor F. H. van den Dungen and General Secretary: Mr. J. Vandenkerckhove) and their of the National Congresses of Applied Mechanics, Chicago, staff for their succesful efforts in the interest of the Congress. pubhshed by the American Society of Mechanical Engineers, 29 West 39th street, New-York 18, N. Y., 1951-1956. The International Committee also acknowledges with sincere thanks a grant of S 2500 by JUT AM for assist ance t owards the expenses of d) the Science Council of Japan, Ueno Park, Tokyo: promising young scientists attending the Conwess. In a.ll 37 Proceedmgs of the Japan National Congresses 1951-1953-1955. scientists received grants to amounts dependmg on their travelling distance t o Brussels. The International Committee feels deeply indebted e) Publications on Symposia, etc.: t o JUTAM in t his respect because t he attendance of promising 1. Problems of Cosmical Aerodynamics, Proceedings of the Symposium scientist s is of primary importance for the development of our science. on the Motion of Gaseous Masses of Cosmical Dimensions held at Since its last meetincr at Istanbul the International Committee August 16-19, 1949, organised by IUTAM and IAU. regrets the decease of tw; members: Professor Kerim Erim. and Pubhshed by: Central Air Documents Offi ce, Army-Navy-Air Force fessor R. von Mises. Five new members were elect ed at a meetmg durmg UB Building, Dayton 2, Ohio, USA. ' the Brussels Congress: Professor G. K. Batchelor (Cambridge-England), Copies can be obtained from Secretary U. S. National Committee Professor J. P. den Hartog (Cambridge, Mass.), Professor N. I. Muskhe- on Theoretical and Applied Mechanics, Room 1101, 29 West 39th street, lishvili (Tiflis), Professor Maurice Roy (Paris), Professor L. Sedov (Mos- New-York 18, N. Y., USA, and from the Secretariat of the Intern. cow). The President, Professor F . .H . van den and the Trea- Astronomical Union (address: the Universit y Observatory, Ost ervold- surer Sir Richard Southwell retired from their offices. Professor gade 3, Kobenhavn, Denmark). C. B.' Biezeno was elected P resident for t he period until the beginning 2. Colloque international de Mecanique, Pallanza, Lago Maggiore, Italia, of the 10th Congress, and Professor G. K. was 23-24 juin 1950, organise par IUTAM. · Treasurer. The Executive Committee fo r the pen od 19:>6-1960 consists of Prof. C. B. Biezeno (President), Sir Richard Southwell, Prof. W. T. Publie par le Consiglio Nazionale delle Ricerche, Roma, dans «La Ricerca Scientifica n, annee 20, no 12, pp. 1917, 1942, dec. 1950. Koiter (Secretary). An invitation by Professor G. Colonnetti to hold the lOth Congress 3. Colloquium ?n Plastic Flow and Deformation with in the Earth, Hershey, in 1960 at Stresa in Italy was gratefully accepted. The exact dates Pennsylvama, September 12-14, 1950 organised by IUTAM and of this Congress will be announced later. IUGG. ' by the American Geophysical Union in the << Transactions W. T. Koiter. Amencan Geophysical Union n, Vol. 32, no 4, pp. 497-543, 1951. • ET APPLIQUEE RAPPORTS 1954-1955-1956 43 42 UNION INTERNATIONALE DE MECANIQUE THEORIQUE . b btained from Secretary American Geophysi- Technische Boekhandel en Drukkerij J. Waltman Jr., Delft, 1925. A few copres can e o . t D c cal Union, 1530, P. Street, N. W., Washmg on, . . (A limited number of copies are available for sale at the Labora- L. . · tenu a l'Ile de Porque- torium voor Toegepaste Mechanica or at the Laboratorium voor 4. Colloque sur les Vibra1t8io2n1s Nont- organise par IUTAM Aero- en Hydrodynamica der T. H. Delft.) roUes, Var, France, - sep e ' 2nd Congress, Ziirich (Switzerland), 12-17 September 1926. et URSI. 281' Ministere de l' Air, 4 av. de la Verhandlungen- Comptes rendus- Proceedings of the 2nd Inter- Publications scientifiques, no national Congress for Applied Mechanics, Zurich, 12-17 September Porte d' Issy Paris 15e, France. . . 1926, herausgegeben von E. Meissner (one vol.). ' t , Bruxelles les 25-29 avril 1952, orgamse 5 Colloque Massau, enu a d IUTAM Orell Fiissli Verlag, Ziirich und Leipzig, 1927. · ·t · M au avec le concours e · par le Comr e ass. .' d G d rue de la Victoire, Bruxel1 es. 3rd Congress, Stockholm (Sweden), 24-29 August 1930. Association des Ingemeurs e an ' . Verhandlungen - Proceedings of the 3rd International Congress . Gas Dynamics of Interstellar Clouds (Cambndge, 6. 2nd Symposrum on . IAU) for Applied Mechanics - Comptes rendus, herausgegeben von A. England 1953, in cooperation wrth . d H l t C. W. Oseen und W. Weibull (3 vols.). ' · f c smic Clouds, edited by H. C. van · e . us AB. Sveriges Litografiska Tryckerier, Stockholm, 1931. « Gas Dynamrcs o o . . 0 2) Amsterdam » pubhshed and J. M. Burgers (IAU_ Prix$ 5 4th Congress, Cambridge (England), 3-9 July 1934. by North-Holland Pubhshmg ompan • Proceedings of the Fourth International Congress for Applied Mecha- 7. Colloquium on Photoelaslicily and Photoplaslicily (Bruxelles, 29-31 nics, Cambridge, England, July 3rd-9th, 1934 (one vol.). University Press, Cambridge (England), 1935. juillet 1954). . . · de Boondael, 602- p blished by Imprimene Dwncre, Chaussee 5th Congress, Cambridge (Massachusetts, USA), 12-16 September 1938. 602a, (Belgique). . Proceedings of the Fifth International Congress for Applied Mecha- 8. Colloquium on Fatigue (Stockholm, 25-27 may 1955), orgamsed by nics, Held at Harvard University and the Massachusetts Institute of Technology, Cambridge, Mass., September 12-16, 1938, edited by J. P. den Hartog and H. Peters (one vol.). ' IUTAl\1. . B 1. w 35 Reichpietschufer 20 Published by Sprmger-Ver1 ag, er m ' John Wiley and Sons, Inc., New-York, and Chapman and Hall (West Berlin). . _ Ltd, London, 1939. Colloquium on Deformation and Flow in Solids (Madnd, 26-29 sep 6th Congress, Paris (France), 22-29 September 1946. 9· · db IUTAM tember 1955), Y B ·l'· W Reichpietschufer 20 Proceedings not published (was given in the hands of Gauthier- Published by Spnnger-Vcrlag, er m 35 ' Villars, Paris). (West Berlin). h · 7th Congress, London (England), 5-11 September 1948. C for Applied Mec ames. f) Proceedings of the International ongresses . Proceedings of the Seventh International Congress for Applied t' l Congresses for Applied Mecha- Mechanics, 1948, published by the Organizing Committee (Intro- The organisation. of the Committee for the Con- duction, Vol. I, Vol. II - Parts 1 and 2, Vol. III, Vol. IV). nics which is supervrsed e_ << f ach Congress separately entrusted To be obtained from: The Modern Book, Company, 19-23 Pread- gresses of Applie? », rs also undertakes the publication street, Paddington, London W. 2. to a local Orgamsmg w There is consequently no central 8/h Congress, Istanbul (Turkey), 20-28 August 1952. of the Proceedings of the . ongress. b ·dered and for each volume Proceedings published by the Organizing Committee (Vol. I, Vol. II). point from which who'took care of that parti- Faculty of Sciences University of P. 0. B. 245, Istanbul application must be made to t e pu 1 (Turkey). cular volume. d th ames of the publishing firms are To be obtained from: The Modern Book Company, 19-23 Pread- The titles of the volumes an e n . street, Paddington, London W. 2. given below. . 6 A ·1 1924· 9th Congress, Brussels (Belgium), 5-13 September 1956. Jst Congress,_ Delftf for Applied Mecha- Proceedings published by the Organizing Committee (Vol. I to Proceedmgs o t e _rrsd b C B Biezeno and J . M. Burgers (one Vol. VIII). Y • · nics, Delft 1924, edrte Free University of Brussels, 50 av. Franklin-Roosevelt, Brussels. vol.). RAPPORTS 1954-1955-1956 45 ET APPLIQUEE INTERNATIONALE DE MECANIQUE THEORIQUE 44 UNION 0. Liste des bienfoiteurs pour les onnees 1954-1955-1956. M. Souscriptions onnuelles La IIIe Assemblee Generale a decide de publier une liste annuelle Number of units (unit = $50) des personnes ou des institutions qui ont, durant les annees ecoulees, aide l'IUTAl\1 de leurs subventions. 1956 1951 1952 1953 1954 1955 En execution de cette decision, le Bureau a le plaisir de citer dans 1 1 1 ce rapport les noms suivants : Int. Committee 8 8 8 8 8 8 a) L'UNESCO et l'ICSU, pour les subventions destinees a couvrir Great Britain . 1 1 1 une partie des frais de voyage des participants : Hungary 2 2 5 5 5 5 - a Generale et au Colloque de Bruxelles (1954); France. 1 - aux Colloques de Stockholm et de Madrid (1955). Czechoslovakia 1 1 1 1 Norway b) Le Gouvernement suedois qui, par l'intermediaire du Conseil 1 1 1 1 1 1 Technique et Scientifique de Recherche (Statens tekniska forskningsrad, Italy 3 3 3 3 3 3 Belgium . 8 8 8 8 8 Grevturegatan 14, Stockholm 5) a subventionne le Collo_que sur Ia Fatigue 8 (Stockholm, 25-27 mai 1955) d'un montant de 6.000 couronnes suedoises. USA 1 1 1 1 2 2 Denmark 1 Ce Colloque a egalement beneficie de subventions des organismes 1 1 1 1 1 Sweden suivants : Turkey 2 2 2 2 De Lavals Angturbin AB, Stockholm 15 (1.000 couronnes sue- 2 daises); India 1 1 1 1 1 1 Switzerland 3 Svenska Turbinfabrik AB, Ljungstrom (STAL) ; 1 1 3 3 3 Germany. 1 Finsburg (1.000 couronnes suedoises). 1 1 1 1 1 Israel . 2 2 2 2 2 Spain . 1 c) Son Excellence le Ministre de l'Air Eduardo Gonzalez Gallarza, 1 1 1 1 Ministerio del Aire ; Le General Apolinar Saenz de Buruaga, Presidente Austria 3 3 3 3 3 3 Japan .. ace. del Patronato del Instituto Nacional de Tecnica Aeromiutica, Ser- 1 1 1 1 rano 43, Madrid ; M. Antonio Nunez, Director General del Instituto Yugoslavia 2 2 3 Poland Nacional de Tecnica Aeronfmtica, Serrano 43, Madrid, pour le patronage 2 et !'assistance qu'ils ont accordes au Colloque sur les deformation et Netherlands 1 1 1 1 Finland ecoulement dans les solides (Madrid, 26-29 septembre 1955).
N. Comptes en bonque de I UT AM Bank accounts of I UTAM
Tresoner. : p ro f essor G. Temple• The Mathematical. . Institute, 10 Parks Road, Oxford (Great Bntam). National Provincial Bank Ltd, High Street Branch, Oxford, England. Chemical Bank and Trust Company • · Brooklyn Branch, New-York (N.Y.). Credit Lyonnais, . 20 Boulevard Malesherbes, Pans, France, Agence XB-453, No de compte 738,025 F . No 930417, R. Mees en Zoonen, Oude Delft, 165, Delft, Netherlands. Svenska Handelsbanken, Stockholm Cheque Account n° 382. Acheve d'imprimer en Mars 1958 sur lea Presses de l'I.T.E. J