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- W2952548068 abstract "This paper introduces an explicit residual-based a posteriori error analysis for the symmetric mixed finite element method in linear elasticity after Arnold-Winther with pointwise symmetric and H(div)-conforming stress approximation. Opposed to a previous publication, the residual-based a posteriori error estimator of this paper is reliable and efficient and truly explicit in that it solely depends on the symmetric stress and does neither need any additional information of some skew symmetric part of the gradient nor any efficient approximation thereof. Hence it is straightforward to implement an adaptive mesh-refining algorithm obligatory in practical computations. Numerical experiments verify the proven reliability and efficiency of the new a posteriori error estimator and illustrate the improved convergence rate in comparison to uniform mesh-refining. A higher convergence rates for piecewise affine data is observed in the L2 stress error and reproduced in non-smooth situations by the adaptive mesh-refining strategy." @default.
- W2952548068 created "2019-06-27" @default.
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- W2952548068 date "2017-05-24" @default.
- W2952548068 modified "2023-09-25" @default.
- W2952548068 title "Residual-based a posteriori error analysis for symmetric mixed Arnold-Winther FEM" @default.
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- W2952548068 doi "https://doi.org/10.48550/arxiv.1705.08851" @default.
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