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NASA Conference Publication 1:912_rt 2
NASA Workshopon Computational
StructuralMechanics
1987
Nancy P. Sykes, Editor
Analytical Services and Materials, Inc.
Hampton, Virginia
Proceedings of a workshop sponsored by
the National Aeronautics and SpaceAdministration and held at
Langley Research CenterHampton, Virginia
November 18-20, 1987
!
_D
(NASA-CP-IOOIZ-Pt-Z) NASA WORKSHOP ON
C_MPUTATIONAL STRUCTURAL MECHANICS 1987,
PART 2 (NASA. Lanqley Research Center}CSCL
374 p20K
Hl/39
February 1989
N89-29789
--THRU--
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Unclas
0211957
ASANational Aeronautics andSpace Administration
Preface
This document contains the proceedings of the NASA Workshop on ComputationalStructural Mechanics, held at NASA Langley Research Center, November 18-20, 1987.The workshop was sponsored jointly by NASA Langley Research Center and NASALewis Research Center.
The purpose of the workshop was to allow participants in Langley's and Lewis'Computational Structural Mechanics (CSM) research programs to meet and toshare research objectives and accomplishments. The intent was to encourage acooperative Langley/Lewis CSM program in which Lewis concentrates on enginestructures applications, Langley concentrates on airframe and space structuresapplications, and all participants share technology of mutual interest.
The workshop was organized into the following three sessions:
I Concurrent Processing Methods and Applications
II Advanced Methods & Testbed/Simulator Development
III Computational Dynamics
Session I dealt with parallel processing methods and languages, new computerhardware, and software architecture to exploit parallel computers.
Session II dealt with the Langley CSM Testbed, the Lewis Engine Structures
Computational Simulator, and Structural Analysis Technology involving finiteelements, boundary elements, and probabilistic approaches.
Session III dealt with advanced methods for structural dynamics.
The use of trade names or names of manufacturers in this publication does notconstitute an official endorsement of such products or manufacturers, either
expressed or implied, by the National Aeronautics and Space Administration.
W. Jefferson Stroud
With the exception of a few adjustments madeprimarily for the purpose of uniformity, all pa-pers have been published as received.
--Editor
ii
CONTENTS
PREFACE ............................................................................................. i
W. Jefferson Stroud, LaRC
Part 1'
OVERVIEW OF THE NASA PROGRAMIN COMPUTATIONAL STRUCTURAL MECHANICS ........................................... 1
Murray Hirschbein, NASA Headquarters
SESSION I - CONCURRENT PROCESSING METHODS AND APPLICATIONS
CSM PARALLEL STRUCTURAL METHODS RESEARCH ..................................... 25
Olaf O. Storaasli, LaRC
COMPUTATIONAL STRUCTURAL METHODS AT NASA LEWIS ................. _.......... 61L. J. Kiraly, LeRC
TRANSPUTER FINITE ELEMENT SOLVER ................................................. ... 75
Albert Danial, SPARTA
TRANSPUTER PARALLEL PROCESSING AT NASA LERC ............ . .................... 107
Graham K. Ellis, ICOMP, LeRC
INNOVATIVE ARCHITECTURESFOR DENSE MULTI-MICROPROCESSOR COMPUTERS .................................... 137
Robert E. Larson, Expert-EASE
PARALLEL LINEAR EQUATION SOLVERSFOR FINITE ELEMENT COMPUTATIONS .................................................... 171
James M. Ortega, Gene Poole, Courtenay Vaughan, Andrew Cleary,Brett Averick, U. of Virginia
ALGORITHMS AND SOFTWARE FOR SOLVING FINITE ELEMENT EQUATIONSON SERIAL AND PARALLEL ARCHITECTURES ............................................. 203
Alan George, U. of Tennessee
PARALLEL EIGENVALUE EXTRACTION ..................................................... 239
Fred A. Akl, Ohio U.
PARALLEL ALGORITHMS AND ARCHITECTURES FORCOMPUTATIONAL STRUCTURAL MECHANICS ............................................. 261
Merrell Patrick, Shing Ma, Umesh Mahajan, Duke U.
THE FORCE: A PORTABLE PARALLEL PROGRAMMING LANGUAGESUPPORTING COMPUTATIONAL STRUCTURAL MECHANICS ........................... 273
Harry F. Jordan, Muhammad S. Benten, Juergen Brehm,Aruna Ramanan, U. of Colorado
* Published under separate cover
iii
METHODS FOR DESIGN AND EVALUATION OF PARALLEL
COMPUTING SYSTEMS (THE PISCES PROJECT) ........................................... 281Terrence W. Pratt, Robert Wise, Mary Jo Haught, U. of Virginia and ICASE, LaRC
MULTIPROCESSOR ARCHITECTURE: SYNTHESIS AND EVALUATION .................. 299
Hilda M. Standley, U. of Toledo
ENVIRONMENTAL CONCEPT FOR ENGINEERING SOFTWAREON MIMD COMPUTERS .......................................................................... 323
L. A. Lopez and K. Valimohamed, U. of Illinois
HIERARCHIAL PARALLEL COMPUTER ARCHITECTUREDEFINED BY COMPUTATIONAL MULTIDISCIPLINARY MECHANICS ................... 355
Joe Padovan, Doug Gute, Keith Johnson, U. of Akron
Part 2
SESSION H - ADVANCED METHODS & TESTBED/SIMULATOR DEVELOPMENT
CSM RESEARCH: TESTBED DEVELOPMENT ................................................ 387Ronnie E. Gillian, LaRC
CSM TESTBED ARCHITECTURE .............................................................. 419
Philip Underwood, Lockheed PARL
COMPUTATIONAL STRUCTURAL MECHANICS _'ENGINE STRUCTURES COMPUTATIONAL SIMULATOR .................................. _459
C. C. Chamis, LeRC
INTERFACING MODULES FOR INTEGRATING /_DISCIPLINE SPECIFIC STRUCTURAL MECHANICS CODES ............................... 487
Ned M. Endres, LeRC
CSM RESEARCH: METHODS AND APPLICATION STUDIES .............................. _._21
Norman F. Knight, Jr., LaRC
GENERIC ELEMENT PROCESSOR (APPLICATION TO NONLINEAR ANALYSIS) ....... 571Gary Stanley, Lockheed PARL
ASSESSMENT OF SPAR ELEMENTS AND FORMULATION OF SOME BASIC 2-D AND gff3-D ELEMENTS FOR USE WITH TESTBED GENERIC ELEMENT PROCESSOR ......... 653
Mohammad A. Aminpour, AS&M, LaRC
DEVELOPMENT AND VERIFICATION OF LOCAL/GLOBAL _ANALYSIS TECHNIQUES FOR LAMINATED COMPOSITES .............................. ._._83
O. Hayden Griffin, Jr., VPI&SU
CONTROL OF THE ERRORS OF DISCRETIZATION __AND IDEALIZATION IN FINITE ELEMENT ANALYSIS ..................................... 733
Barna A. Szab6, Washington U.
iv
Part 3*
BOUNDARY ELEMENTS FOR STRUCTURAL ANALYSIS ................................... 763
Ray Wilson, P&W
DEVELOPMENT OF AN INTEGRATED BEM FOR IIOTFLUID-STRUCTURE INTERACTION .......................................................... 831
P. K. Banerjee and G. F. Dargush, SUNY-Buffa!o
PROBABILISTIC STRUCTURAL ANALYSIS METItODS FOR SELECT SPACEPROPULSION SYSTEM STRUCTURAL COMPONENTS ..................................... 865
T. A. Cruse, SWRI
PROBABILISTIC FINITE ELEMENTS (PFEM) APPLIEDTO STRUCTURAL DYNAMICS AND FRACTURE MECHANICS ............................. 903
Wing-Kam Liu, Ted Belytschko, A. Mani, G. Besterfield, Northwestern U.
3-D INELASTIC ANALYSES FOR COMPUTATIONAL S'P]_UCTURAL MECHANICS ..... 943
D. A. ttopkins and C. C. Chamis, LeRC
SPECIALTY FUNCTIONS FOR S_:C .UL,_ I_[_'_,7 M [_CI{A NICS PROBLEMS ................ 981
Nesrin Sarigul, Ohio State U.
SESSION III- COMPUTATIONAL DYNAMICS
LARC COMPUTATIONAL STRUCT U '7[AL DYNAMICS OVERV JEW ....................... t 013
J. M. Housner, LaRC
ALGORITHMS AND SOFTWARE FOR. NONLTNEAR STRUCTURAL DYNAMICS ....... 10,13
Ted Belytschko, Noreen D. Gilbertsen, Mark O. Neal, Northwestern U.
CONCURRENT ALGORITHMS FOR TRANSIENT FE ANALYSIS ......................... 1067M. Ortlz, Brown U. and B. Nour-Omid, Lockheed PARL
COMPUTATIONAL METHODS AND SOFTWARE SYSTEMSFOR DYNAMICS AND CONTROL OF LARGE SPACE STRUCTURES .................... 11.05
K. C. Park, C. A. Felippa, Charbel Farhat, J. D. Downer, J. C. Chiou,W. K. Belvin, U. of Colorado
MULTI-GRID FOR STRUCTURES ANALYSIS ................................................ 1133Albert F. Kaseak. LeRC
* Published under sep,t._a!e ,:.vcr
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762
1. Report No.
NASA CP- i0012, Part 2
4 Title and Subtitle
Report Documentation Page
2. Government Accession No. 3. Recipient's Catalog No.
5, Report Date
NASA Workshop
Mechanics- 1987
7. Author(s)
on Computational Structural
Nancy P. Sykes, Editor
9, Pedorming Organization Name and Address
NASA Langley Research Center
Hampton, VA 23665-5225
12. Sponsoring Agency Name and Address
National Aeronautics and Space
Washington, DC 20546-0001
Administration
February 1989
6. Performing Organization Code
8. Performing Organization Report No,
10. Work Unit No.
505-63-01-10
11. Contract or Grant No.
13. Type of Report and Period Covered
Conference Publication
14. Sponsoring _,gency Code
15. Supplementary Notes
Nancy P. Sykes: Analytical Services and Materials, Inc., Hampton, Virginia.
16 Abstract
This conference publication contains the proceedings of the Workshop on
Computational Structural Mechanics held at NASA Langley Research Center,
November 18-20, 1987. The workshop was sponsored jointly by NASA LangleyResearch Center and NASA Lewis Research Center.
The workshop was organized into the following three sessions:
(1) Concurrent Processing Methods and Applications
(2) Advanced Methods & Testbed/Simulator Development
(3) Computational Dynamics
17Key Words(SuggestedbyAuthor(sll
Parallel Processing
Computational Dynamics
Testbed
Computational Structural Mechanics
19 Security Cla_if (of this report)
Unclassified
NASA FORM 1626 OCT 86
I I['or sale by the National Technical Information Service, Springfield, Virginia 22161-2171
20. Security Classif, (of this page)
Unclassified
18. Distribution Statement
Unclassified - Unlimited
Subject Category 39
21 No. of pages382
Price
A17