Applied Mechanics Division Newsletter 2020
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Theodore Von KÃ
http://oac.cdlib.org/findaid/ark:/13030/kt2f59p3mt No online items Guide to the Papers of Theodore von Kármán, 1871-1963 Archives California Institute of Technology 1200 East California Blvd. Mail Code 015A-74 Pasadena, CA 91125 Phone: (626) 395-2704 Fax: (626) 793-8756 Email: [email protected] URL: http://archives.caltech.edu © 2003 California Institute of Technology. All rights reserved. Guide to the Papers of Theodore Consult repository 1 von Kármán, 1871-1963 Guide to the Papers of Theodore von Kármán, 1871-1963 Collection number: Consult repository Archives California Institute of Technology Pasadena, California Contact Information: Archives California Institute of Technology 1200 East California Blvd. Mail Code 015A-74 Pasadena, CA 91125 Phone: (626) 395-2704 Fax: (626) 793-8756 Email: [email protected] URL: http://archives.caltech.edu Encoded by: Francisco J. Medina. Derived from XML/EAD encoded file by the Center for History of Physics, American Institute of Physics as part of a collaborative project (1999) supported by a grant from the National Endowment for the Humanities. Processed by: Caltech Archives staff Date Completed: 1978; supplement completed July 1999 © 2003 California Institute of Technology. All rights reserved. Descriptive Summary Title: Theodore von Kármán papers, Date (inclusive): 1871-1963 Collection number: Consult repository Creator: Von Kármán, Theodore, 1881-1963 Extent: 93 linear feet Repository: California Institute of Technology. Archives. Pasadena, California 91125 Abstract: This record group documents the career of Theodore von Kármán, Hungarian-born aerodynamicist, science advisor, and first director of the Daniel Guggenheim Aeronautical Laboratory at the California Institute of Technology. It consists primarily of correspondence, speeches, lectures and lecture notes, scientific manuscripts, calculations, reports, photos and technical slides, autobiographical sketches, and school notebooks. -
Prof. James Norman Goodier
Professor James Norman Goodier (1905 – 1969) See: https://en.wikipedia.org/wiki/James_N._Goodier Applied Mechanics Stanford University Biography from Wikipedia: James Norman Goodier (October 17, 1905 – November 5, 1969) was professor of applied mechanics at Stanford University known for his work in elasticity and plastic deformation. He was born in Preston, Lancashire, England and studied engineering at Cambridge University. He was awarded a Commonwealth Fund Fellowship which enabled him to continue his studies at the University of Michigan where he earned his doctorate in 1931 under the direction of Stephen Timoshenko with a dissertation titled Compression of Rectangular Blocks, and the Bending of Beams by Nonlinear Distributions of Bending Forces. Timoshenko moved to Stanford University in 1936 and Goodier eventually succeeded him there. He was co-author of two classic books in this field: "Theory of Elasticity," with Timoshenko, 1951; and "Elasticity and Plasticity," with P. G. Hodge, Jr., 1958 and was awarded the Timoshenko Medal by the American Society of Mechanical Engineers in 1961. He was chairman of the Applied Mechanics Division of the American Society of Mechanical Engineers 1945-46, and was elected Fellow of that Society in 1964. He had more than fifty doctoral students, one of whom was George F. Carrier. Memorial Resolution, Stanford University by Erastus H. Lee, Miklos Hetenyi and Harold C. Schmidt: Norman Goodier died on Wednesday, November 5, 1969 after a brief illness. He was born on October 17, 1905, in Preston, Lancashire, England where he attended municipal schools and won scholarships to study at Cambridge University. In 1927 he was awarded the B.A. -
Spring Issue • March 2008
ALUMNI REGISTRATION Volume 7 • Spring Issue • March 2008 The Department of Civil and Environmental Engineering is always interested in how our alumni are doing. We hope you will take time to complete the Alumni Update information below. Please include information on your recent professional and personal developments, along with a high-quality photo if available. Please email your information to [email protected] or mail submissions to Civil and Environmental Engineering, Louisiana State University, 3418 Patrick Taylor Hall, Baton Rouge, LA 70803-6405. Name: _______________________________________ Year of Graduation: _______________ Home Address: _________________________________________________________________ Home Telephone: _____________________________ Email: ___________________________ Company: ___________________________________ Title: ____________________________ Volume 7 • Spring Issue March 2008 Business Address: ______________________________________________________________ A Foundation Of Excellence Program Business Telephone: _________________________ Message from the Chair News: _____________________________________________________________________________ Welcome to another exciting issue of our as a volunteer, a sponsor, a participant or a newsletter. This is our first newsletter for spectator, the success of this conference 2008 and we anticipate it to be a very suc- will depend on the combined effort of the ___________________________________________________________________________________ cessful year for the department. -
1 Portraits Leonhard Euler Daniel Bernoulli Johann-Heinrich Lambert
Portraits Leonhard Euler Daniel Bernoulli Johann-Heinrich Lambert Compiled and translated by Oscar Sheynin Berlin, 2010 Copyright Sheynin 2010 www.sheynin.de ISBN 3-938417-01-3 1 Contents Foreword I. Nicolaus Fuss, Eulogy on Leonhard Euler, 1786. Translated from German II. M. J. A. N. Condorcet, Eulogy on Euler, 1786. Translated from French III. Daniel Bernoulli, Autobiography. Translated from Russian; Latin original received in Petersburg in 1776 IV. M. J. A. N. Condorcet, Eulogy on [Daniel] Bernoulli, 1785. In French. Translated by Daniel II Bernoulli in German, 1787. This translation considers both versions V. R. Wolf, Daniel Bernoulli from Basel, 1700 – 1782, 1860. Translated from German VI. Gleb K. Michajlov, The Life and Work of Daniel Bernoullli, 2005. Translated from German VII. Daniel Bernoulli, List of Contributions, 2002 VIII. J. H. S. Formey, Eulogy on Lambert, 1780. Translated from French IX. R. Wolf, Joh. Heinrich Lambert from Mühlhausen, 1728 – 1777, 1860. Translated from German X. J.-H. Lambert, List of Publications, 1970 XI. Oscar Sheynin, Supplement: Daniel Bernoulli’s Instructions for Meteorological Stations 2 Foreword Along with the main eulogies and biographies [i, ii, iv, v, viii, ix], I have included a recent biography of Daniel Bernoulli [vi], his autobiography [iii], for the first time translated from the Russian translation of the Latin original but regrettably incomplete, and lists of published works by Daniel Bernoulli [vii] and Lambert [x]. The first of these lists is readily available, but there are so many references to the works of these scientists in the main texts, that I had no other reasonable alternative. -
New General Principle of Mechanics and Its Application to General Nonideal Nonholonomic Systems
New General Principle of Mechanics and Its Application to General Nonideal Nonholonomic Systems Firdaus E. Udwadia1 Abstract: In this paper we develop a general minimum principle of analytical dynamics that is applicable to nonideal constraints. The new principle encompasses Gauss’s Principle of Least Constraint. We use this principle to obtain the general, explicit, equations of motion for holonomically and/or nonholonomically constrained systems with non-ideal constraints. Examples of a nonholonomically constrained system where the constraints are nonideal, and of a system with sliding friction, are presented. DOI: 10.1061/͑ASCE͒0733-9399͑2005͒131:4͑444͒ CE Database subject headings: Constraints; Equations of motion; Mechanical systems; Friction. Introduction ments. Such systems have, to date, been left outside the perview of the Lagrangian framework. As stated by Goldstein ͑1981, p. The motion of complex mechanical systems is often mathemati- 14͒ “This ͓total work done by forces of constraint equal to zero͔ cally modeled by what we call their equations of motion. Several is no longer true if sliding friction is present, and we must exclude formalisms ͓Lagrange’s equations ͑Lagrange 1787͒, Gibbs– such systems from our ͓Lagrangian͔ formulation.” And Pars Appell equations ͑Gibbs 1879, Appell 1899͒, generalized inverse ͑1979͒ in his treatise on analytical dynamics writes, “There are in equations ͑Udwadia and Kalaba 1992͔͒ have been developed for fact systems for which the principle enunciated ͓D’Alembert’s obtaining the equations of motion for such structural and me- principle͔… does not hold. But such systems will not be consid- chanical systems. Though these formalisms do not all afford the ered in this book.” Newtonian approaches are usually used to deal same ease of use in any given practical situation, they are equiva- with the problem of sliding friction ͑Goldstein 1981͒. -
On Stability Problem of a Top Rendiconti Del Seminario Matematico Della Università Di Padova, Tome 68 (1982), P
RENDICONTI del SEMINARIO MATEMATICO della UNIVERSITÀ DI PADOVA V. V. RUMJANTSEV On stability problem of a top Rendiconti del Seminario Matematico della Università di Padova, tome 68 (1982), p. 119-128 <http://www.numdam.org/item?id=RSMUP_1982__68__119_0> © Rendiconti del Seminario Matematico della Università di Padova, 1982, tous droits réservés. L’accès aux archives de la revue « Rendiconti del Seminario Matematico della Università di Padova » (http://rendiconti.math.unipd.it/) implique l’accord avec les conditions générales d’utilisation (http://www.numdam.org/conditions). Toute utilisation commerciale ou impression systématique est constitutive d’une infraction pénale. Toute copie ou impression de ce fichier doit conte- nir la présente mention de copyright. Article numérisé dans le cadre du programme Numérisation de documents anciens mathématiques http://www.numdam.org/ On Stability Problem of a Top. V. V. RUMJANTSEV (*) This paper deals with the stability of a heavy gyrostate [1] on a horizontal plane. The gyrostate is considered as a rigid body with a rotor rotating freely (without friction) about an axis invariably con- nected with the body leaning on a plane by a convex surface, i.e. the top in a broad sence of this word. For mechanician the top is a symple and principal object of study [2] attracting investigators’ attention. 1. Let $ql be the fixed coordinate system with the origin in some point of a horizontal plane and vertically up directed axis I with unit vector y; OXIX2Xa is the coordinate system rigidly connected with the body with the origin in centre of mass of gyrostate and axis ~3 coincided with one of its principal central axes of inertia. -
Stephen P. Timoshenko
NATIONAL ACADEMY OF SCIENCES STEPHEN P. TIMOSHENKO 1878—1972 A Biographical Memoir by C. RICHARD SODERBERG Any opinions expressed in this memoir are those of the author(s) and do not necessarily reflect the views of the National Academy of Sciences. Biographical Memoir COPYRIGHT 1982 NATIONAL ACADEMY OF SCIENCES WASHINGTON D.C. STEPHEN P. TIMOSHENKO December 23, 1878-May 29, 1972 BY C. RICHARD SODERBERG HE MAJOR FACTS of the life of Stephen P. Timoshenko Tare by now well known. He was born as Stepen Prokof- yevich Timoshenko* in the village of Shpotovka in the Ukraine on December 23,1878. Stephen's father, born a serf, had been brought up in the home of a landowner, who later married Stephen's aunt. His father subsequently received an education as a land surveyor and practiced this profession until he himself became a landowner of some means. Timoshenko's early life seems to have been a happy one, in pleasant rural surroundings. 'The concluding decades of the nineteenth century were a period of relative tranquility in Russia, and the educational ideals of the middle class were not much different from, and certainly not inferior to, those of their counterparts in Western Europe. He concluded his secondary education with a gold medal at the technical realschulet in Romny, near Kiev. His father had rented an NO~E: The Academy would like to express its gratitude to Dr. J. P. Den Hartog for his help in the preparation of this memoir after the death of C. Richard Soderberg in 1979. *The spelling of Russian names and terms follows that of E. -
A Tribute to Dr. Daniel C. Drucker 1918 - 2001
SEM History Experimental Techniques November/December 2001, Vol. 25, No. 6 and January/February 2002, Vol. 26, No. 1 A TRIBUTE TO DR. DANIEL C. DRUCKER 1918 - 2001 SESA President 1960-61 Dan was a highly esteemed member of SESA/SEM and the recipient of more honors and awards than any other member in the history of SEM. His activity with the Society began with the Eastern Photoelastic Conferences which later became the SESA. For reasons which he couldn't remember he did not attend the first meeting of the new society, but soon joined it and was very active for many years. Dan was a member of the Executive Committee when the momentous decision was made for the Society to hire a headquarters staff and to initiate the monthly magazine Experimental Mechanics. Later he was the President when the new mode was made operational, and there were many difficult growing pains during the transition. I was on the Executive Committee at that time and got my first glimpse of his extraordinary ability to settle the sensitive problems without hurting anyone's feelings. Dan was the recipient of the Society's two highest honors, the Murray Lectureship and Honorary Member. He also received the M. M. Frocht Award. Dan continued his association with SEM, and in recent years was a speaker at the SEM 50th Anniversary Celebration, and served as a member of the SEM Educational Foundation and of the International Advisory Board for Experimental Mechanics. Dan Drucker was born in New York City and started his engineering career as a student at Columbia University. -
Memorial Tributes: Volume 5
THE NATIONAL ACADEMIES PRESS This PDF is available at http://nap.edu/1966 SHARE Memorial Tributes: Volume 5 DETAILS 305 pages | 6 x 9 | HARDBACK ISBN 978-0-309-04689-3 | DOI 10.17226/1966 CONTRIBUTORS GET THIS BOOK National Academy of Engineering FIND RELATED TITLES Visit the National Academies Press at NAP.edu and login or register to get: – Access to free PDF downloads of thousands of scientific reports – 10% off the price of print titles – Email or social media notifications of new titles related to your interests – Special offers and discounts Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the National Academies Press. (Request Permission) Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 5 i Memorial Tributes National Academy of Engineering Copyright National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 5 ii Copyright National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 5 iii National Academy of Engineering of the United States of America Memorial Tributes Volume 5 NATIONAL ACADEMY PRESS Washington, D.C. 1992 Copyright National Academy of Sciences. All rights reserved. Memorial Tributes: Volume 5 MEMORIAL TRIBUTES iv National Academy Press 2101 Constitution Avenue, NW Washington, DC 20418 Library of Congress Cataloging-in-Publication Data (Revised for vol. 5) National Academy of Engineering. Memorial tributes. Vol. 2-5 have imprint: Washington, D.C. : National Academy Press. 1. Engineers—United States—Biography. I. Title. TA139.N34 1979 620'.0092'2 [B] 79-21053 ISBN 0-309-02889-2 (v. -
On the Foundations of Analytical Dynamics F.E
International Journal of Non-Linear Mechanics 37 (2002) 1079–1090 On the foundations of analytical dynamics F.E. Udwadiaa; ∗, R.E. Kalabab aAerospace and Mechanical Engineering, Civil Engineering, Mathematics, and Information and Operations Management, 430K Olin Hall, University of Southern California, Los Angeles, CA 90089-1453, USA bBiomedical Engineering and Economics, University of Southern California, Los Angeles, CA 90089, USA Abstract In this paper, we present the general structure for the explicit equations of motion for general mechanical systems subjected to holonomic and non-holonomic equality constraints. The constraints considered here need not satisfy D’Alembert’s principle, and our derivation is not based on the principle of virtual work. Therefore, the equations obtained here have general applicability. They show that in the presence of such constraints, the constraint force acting on the systemcan always be viewed as madeup of the sumof two components.The explicit formfor each of the two components is provided. The ÿrst of these components is the constraint force that would have existed, were all the constraints ideal; the second is caused by the non-ideal nature of the constraints, and though it needs speciÿcation by the mechanician and depends on the particular situation at hand, this component nonetheless has a speciÿc form. The paper also provides a generalized formof D’Alembert’sprinciple which is then used to obtain the explicit equations of motion for constrained mechanical systems where the constraints may be non-ideal. We show an example where the new general, explicit equations of motion obtained in this paper are used to directly write the equations of motion for describing a non-holonomically constrained system with non-ideal constraints. -
2014 Honors & Awards
2014 HONORS & AWARDS The American Society of Mechanical Engineers (ASME) Honors_Assembly_BrochureCover2.indd 1 9/29/14 10:42 AM ASME 14 Honors & Awards_Layout 1 10/28/2014 1:03 PM Page a ASME 2014 Honors & Awards ASME 14 Honors & Awards_Layout 1 10/28/2014 1:03 PM Page 1 Table of Contents ASME Medal....................................................................................................................4 Honorary Membership ..............................................................................................5–9 Barnett-Uzgiris Product Safety Design Award ..........................................................9 Bergles-Rohsenow Young Investigator Award in Heat Transfer............................11 Blackall Machine Tool and Gage Award....................................................................12 Per Bruel Gold Medal for Noise Control and Acoustics ........................................15 Edwin F. Church Medal ..............................................................................................16 Daniel C. Drucker Medal ............................................................................................17 William T. Ennor Manufacturing Technology Award..............................................18 Nancy DeLoye Fitzroy and Roland V. Fitzroy Medal..............................................19 Fluids Engineering Award ..........................................................................................21 Freeman Scholar Award ..............................................................................................22 -
Recent Advances in Multi-Body Dynamics and Nonlinear Control
Recent Advances in Multi-body Dynamics and Nonlinear Control Recent Advances in Multi-body Firdaus E. Udwadia Dynamics and Nonlinear Control Aerospace and Mechanical Engineering This paper presents some recent advances in the dynamics and control of constrained Civil Engineering,, Mathematics multi-body systems. The constraints considered need not satisfy D’Alembert’s principle Systems Architecture Engineering and therefore the results are of general applicability. They show that in the presence of and Information and Operations Management constraints, the constraint force acting on the multi-body system can always be viewed as University of Southern California, Los Angeles made up of the sum of two components whose explicit form is provided. The first of these CA 90089-1453 components consists of the constraint force that would have existed were all the [email protected] constraints ideal; the second is caused by the non-ideal nature of the constraints, and though it needs specification by the mechanician who is modeling the specific system at hand, it nonetheless has a specific form. The general equations of motion obtained herein provide new insights into the simplicity with which Nature seems to operate. They are shown to provide new and exact methods for the tracking control of highly nonlinear mechanical and structural systems without recourse to the usual and approximate methods of linearization that are commonly in use. Keywords : Constrained motion, multi-body dynamics, explicit equations of motion, exact tracking control of nonlinear systems In this paper we extend these results along two directions. First, Introduction we extend D’Alembert’s Principle to include constraints that may be, in general, non-ideal so that the forces of constraint may The general problem of obtaining the equations of motion of a therefore do positive, negative, or zero work under virtual constrained discrete mechanical system is one of the central issues displacements at any given instant of time during the motion of the in multi-body dynamics.