Abstract
An adaptive finite element algorithm for problems in elastoplasticity with hardening is proven to be of optimal convergence with respect to the notion of approximation classes. The results rely on the equivalence of the errors of the stresses and energies resulting from Jensen’s inequality. Numerical experiments study the influence of the hardening and bulk parameters to the convergence behavior of the AFEM algorithm. This is the first optimal adaptive FEM for a variational inequality.










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This work was supported by the DFG Research Center Matheon, Project C13.
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Carstensen, C., Schröder, A. & Wiedemann, S. An optimal adaptive finite element method for elastoplasticity. Numer. Math. 132, 131–154 (2016). https://doi.org/10.1007/s00211-015-0714-9
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DOI: https://doi.org/10.1007/s00211-015-0714-9