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Asymptotic analysis of nonlinear thin layers

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General Inequalities 7

Part of the book series: ISNM International Series of Numerical Mathematics ((ISNM,volume 123))

Résumé

On étudie le comportement asymptotique, lorsque ε tend vers 0, de la solution u ε d’un problème couplant une équation linéaire elliptique du second ordre posée dans deux domaines de ℝ3, séparés par un cylindre d’épaisseur 2ε dans lequel une équation quasi-linéaire est posée. Ce comportement asymptotique sera établi à l’aide des méthodes d’épi-convergence. On montre en effet que u ε est solution d’un problème de minimisation. L’épi-convergence des fonctionnelles est alors prouvée en construisant des fonctions-test adaptées et en utilisant des inégalités sous-différentielles.

Abstract

We study the asymptotic behaviour, when ε goes to 0, of the solution u ε of a problem coupling a linear second order elliptic equation posed in two domains of ℝ3, bonded together by a cylindrical film of thickness 2ε, in which a quasilinear equation is posed. This asymptotic behaviour is obtained by means of epi-convergence arguments. Indeed, we prove that u ε is the solution of a minimization problem. The epi-convergence of the linked functionals is proved building appropriate test-functions and using subdifferential inequalities.

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References

  1. Attouch, H., Variational convergence for functions and operators. Pitman (London) 1984.

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© 1997 Springer Basel AG

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Brillard, A. (1997). Asymptotic analysis of nonlinear thin layers. In: Bandle, C., Everitt, W.N., Losonczi, L., Walter, W. (eds) General Inequalities 7. ISNM International Series of Numerical Mathematics, vol 123. Birkhäuser, Basel. https://doi.org/10.1007/978-3-0348-8942-1_26

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  • DOI: https://doi.org/10.1007/978-3-0348-8942-1_26

  • Publisher Name: Birkhäuser, Basel

  • Print ISBN: 978-3-0348-9837-9

  • Online ISBN: 978-3-0348-8942-1

  • eBook Packages: Springer Book Archive

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