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Mathematics of Computation

Published by the American Mathematical Society since 1960 (published as Mathematical Tables and other Aids to Computation 1943-1959), Mathematics of Computation is devoted to research articles of the highest quality in computational mathematics.

ISSN 1088-6842 (online) ISSN 0025-5718 (print)

The 2020 MCQ for Mathematics of Computation is 1.78.

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A posteriori error estimator and error control for contact problems
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by Alexander Weiss and Barbara I. Wohlmuth PDF
Math. Comp. 78 (2009), 1237-1267 Request permission

Abstract:

In this paper, we consider two error estimators for one-body contact problems. The first error estimator is defined in terms of $H(\text {div})$-conforming stress approximations and equilibrated fluxes while the second is a standard edge-based residual error estimator without any modification with respect to the contact. We show reliability and efficiency for both estimators. Moreover, the error is bounded by the first estimator with a constant one plus a higher order data oscillation term plus a term arising from the contact that is shown numerically to be of higher order. The second estimator is used in a control-based AFEM refinement strategy, and the decay of the error in the energy is shown. Several numerical tests demonstrate the performance of both estimators.
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Additional Information
  • Alexander Weiss
  • Affiliation: Institute of Applied Analysis and Numerical Simulations (IANS), Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
  • Email: weiss@ians.uni-stuttgart.de
  • Barbara I. Wohlmuth
  • Affiliation: Institute of Applied Analysis and Numerical Simulations (IANS), Universität Stuttgart, Pfaffenwaldring 57, 70569 Stuttgart, Germany
  • Email: wohlmuth@ians.uni-stuttgart.de
  • Received by editor(s): July 17, 2007
  • Received by editor(s) in revised form: June 2, 2008
  • Published electronically: February 20, 2009
  • Additional Notes: This work was supported in part by the Deutsche Forschungsgemeinschaft, SFB 404, B8
  • © Copyright 2009 American Mathematical Society
    The copyright for this article reverts to public domain 28 years after publication.
  • Journal: Math. Comp. 78 (2009), 1237-1267
  • MSC (2000): Primary 65N30, 65N15, 65N50
  • DOI: https://doi.org/10.1090/S0025-5718-09-02235-2
  • MathSciNet review: 2501049