Comptes Rendus
A methodology for an accurate evaluation of the linearization procedures in nonlinear mean field homogenization
[Une méthodologie pour l'évaluation précise des procédures de linéarisation en homogénéisation non linéaire en champs moyens]
Comptes Rendus. Mécanique, Volume 333 (2005) no. 11, pp. 789-795.

Une méthodologie systématique pour l'évaluation des procédures de linéarisation sur lesquelles s'appuient les théories d'homogénéisation en champs moyens pour les composites non linéaires est présentée et appliquée à titre d'illustration pour l'élasticité non linéaire aux différentes variantes des formulations << affine >> et << au second ordre >> récemment proposées. Elle repose sur l'analyse de composites pour lesquels on résout numériquement avec la même précision et pour la même microstructure aussi bien le problème d'homogénéisation non linéaire complet que le problème d'homogénéisation linéaire relatif au << milieu linéaire de comparaison >> défini par la procédure de linéarisation. La comparaison des résultats permet ainsi d'évaluer rigoureusement les seuls effets de la méthode de linéarisation.

A systematic methodology for the evaluation of the linearization procedures sustaining mean field homogenization theories for nonlinear composite materials is proposed and applied as an illustration to various recently proposed ‘affine’ and ‘second-order’ formulations for nonlinear elasticity. It relies on the analysis of composites for which both the exact nonlinear homogenization problem and the homogenization problem associated with the ‘linear comparison material’ defined by the linearization procedure can be solved numerically with the same accuracy and for the same microstructure. The comparison of the results then provides a rigorous evaluation of the effects of the sole linearization method.

Reçu le :
Accepté le :
Publié le :
DOI : 10.1016/j.crme.2005.10.002
Keywords: Continuum mechanics, Homogenization, Nonlinear behavior, Linearization, Affine, Second order
Mots-clés : Milieux continus, Homogénéisation, Comportement non linéaire, Linéarisation, Affine, Second ordre

Amna Rekik 1 ; Michel Bornert 1 ; François Auslender 1, 2 ; André Zaoui 1

1 Laboratoire de mécanique des solides, École polytechnique, CNRS UMR 7649, 91128 Palaiseau cedex, France
2 Laboratoire de mécanique et ingénieries, université Blaise Pascal/IFMA, 24, avenue des landais, 63170 Aubière, France
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Amna Rekik; Michel Bornert; François Auslender; André Zaoui. A methodology for an accurate evaluation of the linearization procedures in nonlinear mean field homogenization. Comptes Rendus. Mécanique, Volume 333 (2005) no. 11, pp. 789-795. doi : 10.1016/j.crme.2005.10.002. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2005.10.002/

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