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Error estimation and adaptivity for nonlinear FE analysis

Antonio HuertaAntonio Rodríguez-FerranPedro Díez — 2002

International Journal of Applied Mathematics and Computer Science

An adaptive strategy for nonlinear finite-element analysis, based on the combination of error estimation and h-remeshing, is presented. Its two main ingredients are a residual-type error estimator and an unstructured quadrilateral mesh generator. The error estimator is based on simple local computations over the elements and the so-called patches. In contrast to other residual estimators, no flux splitting is required. The adaptive strategy is illustrated by means of a complex nonlinear problem:...

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