A Hybrid Substructuring Method and an Adaptive Refinement Scheme for the Distributed Solution of Three-Dimensional Structural Problems

Paper #:
  • 921082

Published:
  • 1992-06-01
Citation:
Farhat, C., Felippa, C., and Militello, C., "A Hybrid Substructuring Method and an Adaptive Refinement Scheme for the Distributed Solution of Three-Dimensional Structural Problems," SAE Technical Paper 921082, 1992, https://doi.org/10.4271/921082.
Pages:
21
Abstract:
A saddle-point variational principle is constructed to derive a hybrid substructuring method for the parallel solution of three-dimensional structural mechanics problems. A given mesh is partitioned into disconnected submeshes, and an incomplete solution for the displacement field is first evaluated via a direct method. Next, intersubdomain field continuity is enforced via discrete, polynomial, and/or piece-wise polynomial Lagrange multipliers. The proposed methodology is intrinsically parallel and offers attractive features for distributed memory multiprocessors. A combined r - h adaptive refinement procedure is also developed within the context of this hybrid substructuring method. Its basic features include an element-level error indicator that is based on a parametrized variational principle, a permanent load balancing, and an easily programmable interface gluing. The overall computational approach is applied to the structural analysis of the cabin of a launch vehicle on the iPSC/860. Numerical and performance results are reported and discussed in details. They demonstrate the potential of the methodology for the parallel solution of realistic structural mechanics problems.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Technical Paper / Journal Article
2010-04-12
Technical Paper / Journal Article
2010-04-12
Training / Education
2017-01-20
Article
2017-03-13
Training / Education
2018-08-01
Article
2016-12-11
Technical Paper / Journal Article
2010-04-12