On Impact-Contact Algorithms for Parallel Distributed-Memory Computers
Structural vulnerability applications are highly compute intensive. In studies of crashworthiness, impact and penetration, it is not unusual for an analysis to require 100 h of CPU time on current generation production supercomputers, despite the relative simplicity of the models being studied. The difficulty in obtaining blocks of time this large in a production environment severely impairs the number of design options that can be investigated. The lack of software capable of simultaneously, accurately capturing the physics of a crash event and exploiting the power of high-performance computer architectures necessitates costly experimental testing for design verification and certification. For example, in the design of automobiles for crashworthiness, hundreds of sled tests and dozens of full-vehicle crash tests are conducted for each new vehicle program. A sled test may cost $5000 and full-scale prototypes may cost as much as $750,000 each. The cost can be much greater (of the order of $10M) if a redesign results in retooling for a structural component late in the program. Attention has focused on high-performance computer architectures as an effective avenue to bridge the gap between computational needs and the power of computational hardware. New high-performance computer architectures promise order-of-magnitude increases in computational performance, thereby allowing the numerical laboratory to replace physical experiments to a much greater degree.
KeywordsDomain Decomposition Finite Element Mesh Interprocessor Communication Eulerian Grid Finite Element Algorithm
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- J. Boyle, R. Butler, T. Disz, B. Glickfeld, E. Lusk, R. Overbeek, J. Patterson, and R. Stevens, Programs for Parallel Processors, Holt, Rinehart and Winston, New York (1987).Google Scholar
- R. Butler and E. Lusk, User’s Guide to the p4 Preprogramming System, Technical Report ANL-92/17, Argonne National Laboratory, Argonne, IL (October 1992).Google Scholar
- The Advanced Software Development and Commercialization (ASDAC) Project: Progress Report PR-2 (edited by T. Canfield, M. Minkoff, and E. J. Plaskacz), ANL/TM 488 & CSRD Report No. 1129, Argonne, IL 60439 & Urbana, IL 61801 (April 1991).Google Scholar
- E. J. Plaskacz, M. R. Ramirez, and S. Gupta, On Distributed Processing Applications in Finite Element Analysis, Proceedings, Engineering Mechanics Division, ASCE (May 1992).Google Scholar