Multi-Scale Asymptotic Expansion for a Small Inclusion in Elastic Media

The aim of this paper is to present an asymptotic expansion of the influence of a small inclusion of different stiffness in an elastic media. The applicative interest of this study is to provide tools which take into account this influence and correct the deformation without inclusion by additive te...

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Veröffentlicht in:Journal of elasticity 2018-04, Vol.131 (2), p.207-237
Hauptverfasser: Arfaoui, Makrem, Ben Hassine, Mohamed Rafik, Moakher, Maher, Renard, Yves, Vial, Grégory
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container_end_page 237
container_issue 2
container_start_page 207
container_title Journal of elasticity
container_volume 131
creator Arfaoui, Makrem
Ben Hassine, Mohamed Rafik
Moakher, Maher
Renard, Yves
Vial, Grégory
description The aim of this paper is to present an asymptotic expansion of the influence of a small inclusion of different stiffness in an elastic media. The applicative interest of this study is to provide tools which take into account this influence and correct the deformation without inclusion by additive terms that can be precalculated and which depend only on the shape of the inclusion. We treat two problems: an anti-plane linearized elasticity problem and a plane strain problem. On every expansion order we provide corrective terms modeling the influence of the inclusion using techniques of scaling and multi-scale asymptotic expansions. The resulting expansion is validated by comparing it to a test case obtained by solving the Poisson transmission problem in the case of an inclusion of circular shape using the separation of variables method. Proofs of existence and uniqueness of our fields on unbounded domains are also adapted to the bidimensional Poisson problem and the linear elasticity problem.
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subjects Asymptotic properties
Asymptotic series
Automotive Engineering
Classical Mechanics
Deformation
Elastic media
Elasticity
Engineering Sciences
Mathematical Physics
Mathematics
Mechanical engineering
Mechanics
Multiscale analysis
Physics
Physics and Astronomy
Plane strain
Solid mechanics
Stiffness
title Multi-Scale Asymptotic Expansion for a Small Inclusion in Elastic Media
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