A posteriori estimator for the adaptive solution of a quasi-static fracture phase-field model with irreversibility constraints

06/17/2021

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by   Mirjam Walloth, et al.

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Within this article, we develop a residual type a posteriori error estimator for a time discrete quasi-static phase-field fracture model. Particular emphasize is given to the robustness of the error estimator for the variational inequality governing the phase-field evolution with respect to the phase-field regularization parameter ϵ. The article concludes with numerical examples highlighting the performance of the proposed a posteriori error estimators on three standard test cases; the single edge notched tension and shear test as well as the L-shaped panel test.