
N74-19549 NATIONAL AERONAUTICS AND SPACE ADMINISTRATION Technical Report 32-1240 Addendum ELAS-A General-Purpose Computer Program for the Equilibrium Problems of Linear Structures Volume II. Documentation of the Program Senol Utku JET PROPULSION LABORATORY CALIFORNIA INSTITUTE OF TECHNOLOGY PASADENA, CALIFORNIA October 15, 1969 REPRODUCEDBY NATIONAL TECHNICAL SINFORMATION SERVICE U.S.DEPARTMENT OF COMMERCE SPRINGFIELD,VA. 22161 Prepared Under Contract No. NAS 7-100 National Aeronautics and Space Administration I, N O T I C E FROM THE THIS DOCUMENT HAS BEEN REPRODUCED SPONSORING BEST COPY FURNISHED US BY THE THAT CER- AGENCY. ALTHOUGH IT IS RECOGNIZED IT IS BEING RE- TAIN PORTIONS ARE ILLEGIBLE, AVAILABLE LEASED IN THE INTEREST OF MAKIN.G AS MUCH INFORMATION AS POSSIBLE. Preface The work described in this report was performed by the Engineering Mechanics Division of the Jet Propulsion Laboratory. The program was developed by Dr. Senol Utku and Dr. Fevzican A. Akyuz, and is dedicated to the memory of Professor M. Inan of the Technical University of Istanbul. JPL TECHNICAL REPORT 32-1240 Acknowledgment The author is indebted to Vivia Crew for her help in editing all documents related with the ELAS program. iv JPL TECHNICAL REPORT 32-1240 Contents I. Introduction ............... 1 II. Main Program and Subroutines of Link 1 . 2 A. Main Program of Link 1 . ... 2 B. Subroutines of Link 1 . ............. 3 1. Subroutine ARAN . ... 3 2. Subroutine BUNG . .. ... 3 3. Subroutine COOR. .. ... 3 4. Subroutine CORG . 3 5. Subroutine EXCH . 3 6. Function LEBIN . ... 4 7. Subroutine SEBIN . ............ 4 8. Subroutine MESG . ............ 4 9. Subroutine MEST . ............ 4 10. Subroutine OUTPT . ... 4 11. Subroutine SRAT ............ 4 12. Subroutine TABL ............ 5 13. Subroutine TICK . ............. 5 14. Subroutine TOPO . .. 5 III. Main Program and Subroutines of Link 2 . .. 6 A. Main Program of Link 2 . .. 6 B. Subroutines of Link 2 . ... 7 1. Subroutine ADM . ... 7 2. Subroutine BEAM . ............ 8 3. Subroutine CAS2 . ............. 8 4. Subroutine CODI . 8........8 5. Subroutine CORT . ........... 8 6. Subroutine CUTE . ............... 8 7. Subroutine DARN. 8........... 8. Subroutine DMM . ............ 9 JPL TECHNICAL REPORT 32-1240 Contents (contd) 9. Subroutine ELDI . .. 9 10. Subroutine PLBE . ... 9 11. Subroutine RLOC . ............ 9 12. Subroutine S01 . 9 13. Subroutine S02 . .. .... 9 14. Subroutine S03 . .... 10 15. Subroutine S04 . .. 10 16. Subroutine S05 . ... .. 10 17. Subroutine S07 . .. 11 18. Subroutine S09 . .. 11 19. Subroutine S11 . .. .. .. .. .... 11 20. Subroutine S13 . ........... 11 21. Subroutine S15 . ........... 12 22. Subroutine S17 . ............ 12 23. Subroutine S18 . .. 12 24. Subroutine STFS . ............ 12 25. Subroutine STRA . ............ 12 26. Subroutine TICK . 13 27. Subroutine TOPO . .. ... 13 28. Subroutine TRAN . 13 29. Subroutine TRIM ........... 13 30. Subroutine TRM . 13 IV. Main Program and Subroutines of Link 3 . .. 14 A. Main Program of Link 3 . 14 B, Subroutines of Link 3 . 15 1. Subroutine ELST . .. 15 2. Subroutine PUNC . ............ 15 3. Subroutine RESI . 15 4. Subroutine RESW . ............ 15 5. Subroutine TICK . 16 6. Subroutine VELAS. .. ... 16 vi JPL TECHNICAL REPORT 32-1240 Contents (contd) V. Main Program and Subroutines of Link 4 . 17 A. Main Program of Link 4 . 17 B. Subroutines of Link 4 . 17 1. Subroutine ABEQ ................... 17 2. Subroutine AGEL . ... 18 3. Subroutine BEST . ............. 18 4. Subroutine BOFI . ............ 20 5. Subroutine CAS4 . ... 20 6. Subroutine CODI . ... ............... 20 7. Subroutine DIMI . .. .. 20 8. Subroutine DINA . ............ 20 9. Subroutine EPAN . ........... 20 10. Subroutine FINDQ . 21 11. SubroutineFINDX . ........... 21 12. Subroutine GENE . .. ... 21 13. Subroutine INER . .. .............. 21 14. Subroutine INLZ . ............ 21 15. Subroutine INV . ........... 21 16. Subroutine LEST. ........... 22 17. Subroutine MDIN . .. ...... ......... 22 18. Subroutine META . .... 22 19. Subroutine QUAD . .......... .... 22 20. Subroutine REVO . .... .............. 23 21. Subroutine ROTA . .............. 23 22. Subroutine SAME . ........... 23 23. Function SCAL . ... 23 24. Subroutine SETA . ....... ........... 23 25. Subroutine STRA . .... .............. 24 26. Subroutine STRS . ... .. .. ...... 24 27. Subroutine TEMP . ..... .............. 24 28. Subroutine TICK . .... .............. 24 29. Subroutine TOPO ...... ............. 24 30. Subroutine TRAN . .. .............. 24 JPL TECHNICAL REPORT 32-1240 Contents (contd) 31. Subroutine UNIT . ............ 24 32. Subroutine VECT . ......... 24 VI. Semidetailed Flowcharts . .. .. 25 VII. Source Program Listings . .. .. 112 References . 161 Tables V-1. Values of important parameters used in subroutine ABEQ for various classes . ... 19 V-2. Arrangement of prescribed boundary forces by subroutine ABEQ in SR vector for the eight class types . 19 VII-1. Source program listing of main program of Link 1 (input link) . 113 VII-2. Source program listing of subroutine ARAN (Link 1). 115 VII-3. Source program listing of subroutine BUNG (Link 1). 116 VII-4. Source program listing of subroutine COOR (Link 1) . 117 VII-5. Source program listing of subroutine CORG (Link 1). 117 VII-6. Source program listing of subroutine EXCH (Link 1) . 117 VII-7. Source program listing of function LEBIN and subroutine SEBIN (Link 1) . 117 VII-8. Source program listing of suboutine MESG (Link 1) . 118 VII-9. Souce program listing of subroutine MEST (Link 1) . 118 VII-10. Source program listing of subroutine OUTPT (Link 1). 118 VII-11. Source program listing of subroutine SRAT (Link 1) . 119 VII-12. Source program listing of subroutine TABL (Link 1) . 120 VII-13. Source program listing of subroutine TICK (Link 1) . 120 VII-14. Source program listing of subroutine TOPO (Link 1) . 120 VII-15. Source program listing of main program of Link 2 (generation link) . .. ........ 121 VII-16. Source program listing of subroutine ADM (Link 2) . 123 VII-17. Source program listing of subroutine BEAM (Link 2) . 123 VII-18. Source program listing of subroutine CAS2 (Link 2) . 123 VII-19. Source program listing of subroutine CODI (Link 2) . 123 VII-20. Source program listing of subroutine CORT (Link 2) . 124 viii JPL TECHNICAL REPORT 32-1240 Contents (contd) Tables (contd) VII-21. Source program listing of subroutine CUTE (Link 2) . 124 VII-22. Source program listing of subroutine DARN (Link 2) . 125 VII-23. Source program listing of subroutine DMM (Link 2) . 125 VII-24. Source program listing of subroutine ELDI (Link 2) . 125 VII-25. Source program listing of subroutine PLBE (Link 2) . .. 126 VIl-26. Source program listing of subroutine RLOC (Link 2) . 126 VII-27. Source program listing of subroutine S01 (Link 2) . 126 Vll-28. Source program listing of subroutine S02 (Link 2) . 127 VII-29. Source program listing of subroutine S03 (Link 2) . 127 VII-30. Source program listing of subroutine S04 (Link 2) . 128 VII-31. Source program listing of subroutine S05 (Link 2) . 128 VII-32. Source program listing of subroutine S07 (Link 2) . 129 VII-33. Source program listing of subroutine S09 (Link 2) . 129 VII-34. Source program listing of subroutine S11 (Link 2) . 130 VII-35. Source program listing of subroutine S13 (Link 2) . 130 VII-36. Source program listing of subroutine S15 (Link 2) . 131 VII-37. Source program listing of subroutine S17 (Link 2) . 132 VII-38. Source program listing of subroutine S18 (Link 2) . 132 VII-39. Source program listing of subroutine STFS (Link 2) . 133 VII-40. Source program listing of subroutine STRA (Link 2) . 133 VII-41. Source program listing of subroutine TICK (Link 2) . 133 VII-42. Source program listing of subroutine TOPO (Link 2) . 134 VlI-43. Source program listing of subroutine TRAN (Link 2) . 134 Vll-44. Source program listing of subroutine TRIM (Link 2) . 135 Vll-45. Source program listing of subroutine TRM (Link 2) . 135 Vll-46. Source program listing of main program of Link 3 (deflection link) . 136 VII-47. Source program listing of subroutine ELST (Link 3) . 137 VII-48. Source program listing of subroutine PUNC (Link 3) . 137 VII-49. Source program listing of subroutine RESI (Link 3) . 137 VII-50. Source program listing of subroutine RESW (Link 3). 138 VII-51. Source program listing of subroutine TICK (Link 3) . 138 VII-52. Source program listing of subroutine VELAS (Link 3) . 139 JPL TECHNICAL REPORT 32-1240 ix Contents (contd) Tables (contd) VII-53. Source program listing of main program of Link 4 (stress link). 140 VII-54. Source program listing of subroutine ABEQ (Link 4). 141 VII-55. Source program listing of subroutine AGEL (Link 4). 142 VII-56. Source program listing of subroutine BEST (Link 4) . 142 VII-57. Source program listing of subroutine BOFI (Link 4) . 142 VII-58. Source program listing of subroutine CAS4 (Link 4) . 143 VII-59. Source program listing of subroutine CODI (Link 4). 144 VII-60. Source program listing of subroutine DIMI (Link 4) . 144 VII-61. Source program listing of subroutine DINA (Link 4) . 145 VII-62. Source program listing of subroutine EPAN (Link 4) . 146 VII-63. Source program listing of subroutine FINDQ (Link 4) . 147 Vll-64. Source program listing of subroutine FINDX (Link 4) . 148 VII-65. Source program listing of subroutine GENE (Link 4) . 148 Vll-66. Source program listing of subroutine INER (Link 4) . 148 VII-67. Source program listing of subroutine INLZ (Link 4) . 149 Vll-68. Source program listing of subroutine INV (Link 4) . 150 VII-69. Source
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