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Fast structural design and analysis via hybrid domain decomposition on massively parallel processorsA hybrid domain decomposition framework for static, transient and eigen finite element analyses of structural mechanics problems is presented. Its basic ingredients include physical substructuring and /or automatic mesh partitioning, mapping algorithms, 'gluing' approximations for fast design modifications and evaluations, and fast direct and preconditioned iterative solvers for local and interface subproblems. The overall methodology is illustrated with the structural design of a solar viewing payload that is scheduled to fly in March 1993. This payload has been entirely designed and validated by a group of undergraduate students at the University of Colorado using the proposed hybrid domain decomposition approach on a massively parallel processor. Performance results are reported on the CRAY Y-MP/8 and the iPSC-860/64 Touchstone systems, which represent both extreme parallel architectures. The hybrid domain decomposition methodology is shown to outperform leading solution algorithms and to exhibit an excellent parallel scalability.
Document ID
19950041700
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Farhat, Charbel
(Univ. of Colorado, Boulder, CO US, United States)
Date Acquired
August 16, 2013
Publication Date
December 1, 1993
Publication Information
Publication: Computing Systems in Engineering
Volume: 4
Issue: 6-Apr
ISSN: 0956-0521
Subject Category
Computer Programming And Software
Accession Number
95A73299
Funding Number(s)
CONTRACT_GRANT: NSF ASC-87-17773
CONTRACT_GRANT: NAG1-536427
Distribution Limits
Public
Copyright
Other

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