Article (Scientific journals)
A discontinuous Galerkin method for non-linear electro-thermo-mechanical problems; Application to shape memory composite materials
Homsi, Lina; Noels, Ludovic
2018In Meccanica, 53 (6), p. 1357-1401
Peer reviewed
 

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Keywords :
Discontinuous Galerkin method; Electro-thermo-mechanics; Nonlinear elliptic problems; Smart composites; CECI; LIMARC
Abstract :
[en] A coupled Electro-Thermo-Mechanical Discontinuous Galerkin (DG) method is developed considering the non-linear interactions of electrical, thermal, and mechanical fields. In order to develop a stable discontinuous Galerkin formulation the governing equations are expressed in terms of energetically conjugated fields gradients and fluxes. Moreover, the DG method is formulated in finite deformations and finite fields variations. The multi-physics DG formulation is shown to satisfy the consistency condition, and the uniqueness and optimal convergence rate properties are derived under the assumption of small deformation. First the numerical properties are verified on a simple numerical example, and then the framework is applied to simulate the response of smart composite materials in which the shape memory effect of the matrix is triggered by the Joule effect.
Research center :
A&M - Aérospatiale et Mécanique - ULiège
Disciplines :
Mechanical engineering
Materials science & engineering
Author, co-author :
Homsi, Lina ;  Université de Liège - ULiège > Form. doct. sc. ingé. & techno. (aéro. & mécan. - Paysage)
Noels, Ludovic  ;  Université de Liège > Département d'aérospatiale et mécanique > Computational & Multiscale Mechanics of Materials (CM3)
Language :
English
Title :
A discontinuous Galerkin method for non-linear electro-thermo-mechanical problems; Application to shape memory composite materials
Publication date :
April 2018
Journal title :
Meccanica
ISSN :
0025-6455
eISSN :
1572-9648
Publisher :
Kluwer Academic Publishers, Netherlands
Special issue title :
Novel computational approaches to old and new problems in mechanics
Volume :
53
Issue :
6
Pages :
1357-1401
Peer reviewed :
Peer reviewed
Tags :
CÉCI : Consortium des Équipements de Calcul Intensif
Name of the research project :
This project has been funded with support of the European Commission under the grant number 2012-2624/001-001-EM.. This publication reflects the view only of the author, and the Commission cannot be held responsible for any use which may be made of the information contained therein; Computational resources have been provided by the supercomputing facilities of the Consortium des Equipements de Calcul Intensif en Federation Wallonie Bruxelles (CECI) funded by the Fond de la Recherche Scientifique de Belgique (FRS-FNRS).
Funders :
UE - Union Européenne [BE]
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE]
CÉCI - Consortium des Équipements de Calcul Intensif [BE]
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