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Problem-dependent preconditioners for iterative solvers in FE elastostatics
DOI:10.1016/S0045-7949(98)00277-6.png)
摘要
En 中文
Approximate factorizations are probably the most powerful preconditioners at the present time in the context of iterative solution methods for FE structural analysis. In this contribution we focus on some aspects of the reduction method proposed previously, which allow the use of perturbed approximate factorizations, In particular, we show that it is not suitable for systems arising from discretizations with plate or shell elements. In contrast, corrected incomplete Cholesky preconditioners are shown to exhibit a much better convergence for such systems. (C) 1999 Civil-Comp Ltd and Elsevier Science Ltd. All rights reserved.
Keyword:
iterative solution of linear systems
preconditioning
finite element method
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期刊
C
IF:
4.8
论文数:
6.2K
被引数:
1.7W
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