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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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Artificial conditions for the linear elasticity equations
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by Virginie Bonnaillie-Noël, Marc Dambrine, Frédéric Hérau and Grégory Vial PDF
Math. Comp. 84 (2015), 1599-1632 Request permission

Abstract:

In this paper, we consider the equations of linear elasticity in an exterior domain. We exhibit artificial boundary conditions on a circle, which lead to a non-coercive second order boundary value problem. In the particular case of an axisymmetric geometry, explicit computations can be performed in Fourier series proving the well-posedness except for a countable set of parameters. A perturbation argument allows us to consider near-circular domains. We complete the analysis by some numerical simulations.
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Additional Information
  • Virginie Bonnaillie-Noël
  • Affiliation: IRMAR - UMR6625, ENS Rennes, Univ. Rennes 1, CNRS, UEB, av. Robert Schuman, 35170 Bruz, France
  • Email: bonnaillie@math.cnrs.fr
  • Marc Dambrine
  • Affiliation: LMAP - UMR5142, Université de Pau et des Pays de l’Adour, av. de l’Université, BP 1155, 64013 Pau Cedex, France
  • Email: marc.dambrine@univ-pau.fr
  • Frédéric Hérau
  • Affiliation: LMJL - UMR6629, Université de Nantes, 2 rue de la Houssinière, BP 92208, 44322 Nantes Cedex 3, France
  • Email: frederic.herau@univ-nantes.fr
  • Grégory Vial
  • Affiliation: Université de Lyon, CNRS UMR 5208, École Centrale de Lyon, Institut Camille Jordan, 36 avenue Guy de Collongue, 69134 Écully cedex, France
  • Email: gregory.vial@ec-lyon.fr
  • Received by editor(s): December 10, 2012
  • Received by editor(s) in revised form: September 4, 2013, and October 7, 2013
  • Published electronically: November 18, 2014
  • © Copyright 2014 American Mathematical Society
  • Journal: Math. Comp. 84 (2015), 1599-1632
  • MSC (2010): Primary 35J47, 35J57, 35P10, 35S15, 47A10, 47G30, 65N20
  • DOI: https://doi.org/10.1090/S0025-5718-2014-02901-3
  • MathSciNet review: 3335885