A finite element algorithm for reanalysis of structures with added degrees of freedom
作者： B.S Wu , C.W Lim , Z.G Li
DOI: 10.1016/J.FINEL.2004.01.004
关键词:
摘要: This paper is focused on the reanalysis of structures with added degrees freedom. By suitably partitioning extended stiffness matrix, we present a preconditioned conjugate gradient algorithm to analyze modified structure. The preserves ease implementation and improves significantly quality results. In particular, can adaptively monitor accuracy approximate solutions, it applicable general finite element systems. computational cost reduced. Numerical examples are given show effectiveness presented algorithm.
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