Reanalysis of structural modifications due to removal of degrees of freedom
作者： B. S. Wu , Z. G. Li
DOI: 10.1007/S00707-005-0264-9
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摘要: This paper deals with reanalysis of structural modifications due to the removal degrees freedom. A preconditioned conjugate gradient approach is developed solve such problems. The preconditioner constructed, and an efficient implementation for applying presented, which only depends on existing decomposition stiffness matrix initial design. In particular, can adaptively monitor accuracy approximate solutions. Numerical examples show that, compared condition number original matrix, largely reduced. Fast convergence accurate results thus be achieved by proposed approach.
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