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Symmetric-Iterative Solution of Coupled BE and FE Discretizations for Elastoplastics

✍ Scribed by C.Y. Dong; Marc Bonnet

Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
402 KB
Volume
178
Category
Article
ISSN
0045-7825

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✦ Synopsis

In this paper the symmetric-iterative method of coupled FE and BE discretizations is adopted to investigate elastoplastic problems. In order to improve computational eciency, all degrees of freedom related to the BE region, except those degrees of freedom associated with interface, are condenced. The symmetric part of the stiness matrix from the boundary element region is assembled into the stiness matrix of the FEM, but antisymmetric part is taken as the corresponding inΒ―uential load matrix. During the elastoplastic solution process of the FEM, the numerical iterations which includes the inΒ―uence of the antisymmetry of the condensed stiness matrix are being carried out until the convergent results are obtained. Numerical examples are presented to illustrate the performance of the given algorithm and compared with the existing results.

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