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Accuracy of a class of concurrent algorithms for transient finite element analysisThe accuracy of a new class of concurrent procedures for transient finite element analysis is examined. A phase error analysis is carried out which shows that wave retardation leading to unacceptable loss of accuracy may occur if a Courant condition based on the dimensions of the subdomains is violated. Numerical tests suggest that this Courant condition is conservative for typical structural applications and may lead to a marked increase in accuracy as the number of subdomains is increased. Theoretical speed-up ratios are derived which suggest that the algorithms under consideration can be expected to exhibit a performance superior to that of globally implicit methods when implemented on parallel machines.
Document ID
19880042044
Acquisition Source
Legacy CDMS
Document Type
Reprint (Version printed in journal)
Authors
Ortiz, Michael
(Brown Univ. Providence, RI, United States)
Sotelino, Elisa D.
(Brown University Providence, RI, United States)
Nour-Omid, Bahram
(California, University Berkeley, United States)
Date Acquired
August 13, 2013
Publication Date
February 1, 1988
Publication Information
Publication: International Journal for Numerical Methods in Engineering
Volume: 26
ISSN: 0029-5981
Subject Category
Numerical Analysis
Accession Number
88A29271
Funding Number(s)
CONTRACT_GRANT: NAG1-634
Distribution Limits
Public
Copyright
Other

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