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Macroscopic behavior of a reinforced elastomer: micromechanical modelling and validation

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2007
auteur(s) Bouchart Vanessa; Brieu Mathias; Kondo Djimédo; Naït Abdelaziz Moussa
journal (abréviation) Mécanique & Industries (Mec Indust)
volume (numéro) 8 (3)
pages 199 – 205
résumé In the present study, we propose an evaluation of a non-linear homogenization model applied to hyperelastic composites having random microstructure. This modelling approach consists in a 3D implementation of the second order method introduced by Ponte Castañeda & Tiberio [1]. We first recall the basic principles of this method. Then, we investigate a composite made up of an hyperelastic matrix reinforced by spherical deformable or rigid particles. Computational issues of the micromechanical model are discussed and some obtained results allow to demonstrate the reinforcement effect of the particles. In order to provide a rigorous evaluation of the methodology, finite elements computations, on an unit cell, are performed and compared to the predictions of the model. Finally, a confrontation with experimental results is provided.
mots clés Non-linear homogenization / hyperelasticity / second order method / elastomers / finite deformations
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