Une approche integree pour le calcul adaptatif par elements finis
Keywords:
adclptive.finite elements, residual methods, a posteriori error estimates, h-hierarchicalfinite elements, remesltingAbstract
This paper presents an adaptive finite element approach, which aims to integrate in a single software the a posteriori error estimates, the mesh adaptation and tire multi-mesh transfer operators and solvers. The proposed residual met/rod for the error estimates proves to be sufficiently general to treat a large class of mechanical problems. Two techniques of mesh adaptation are considered: the h method which takes advantage of the It hierarchical FEs; the remeshing technique coupled with an exact CAD description of structures. Several numerical examples are presented and emphasise the efficiency of our approach.
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