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Nonlinear structural analysis on distributed-memory computersA computational strategy is presented for the nonlinear static and postbuckling analyses of large complex structures on massively parallel computers. The strategy is designed for distributed-memory, message-passing parallel computer systems. The key elements of the proposed strategy are: (1) a multiple-parameter reduced basis technique; (2) a nested dissection (or multilevel substructuring) ordering scheme; (3) parallel assembly of global matrices; and (4) a parallel sparse equation solver. The effectiveness of the strategy is assessed by applying it to thermo-mechanical postbuckling analyses of stiffened composite panels with cutouts, and nonlinear large-deflection analyses of HSCT models on Intel Paragon XP/S computers. The numerical studies presented demonstrate the advantages of nested dissection-based solvers over traditional skyline-based solvers on distributed memory machines.
Document ID
19950019852
Acquisition Source
Legacy CDMS
Document Type
Other
Authors
Watson, Brian C.
(Virginia Univ. Hampton, VA, United States)
Noor, Ahmed K.
(Virginia Univ. Hampton, VA, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1995
Publication Information
Publication: Center for Computational Structures Technology
Subject Category
Structural Mechanics
Accession Number
95N26272
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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