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A Level-Set based Representative Volume Element generator and XFEM simulations for textile and 3D-reinforced composites

par Sonon, Bernard ;Massart, Thierry,Jacques
Référence Materials, 6, page (5568-5592)
Publication Publié, 2013-11-28

Article révisé par les pairs

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Résumé :

This contribution presents a new framework for the computational homogenisation of the mechanical properties of textile reinforced composites. A critical point in such computational procedures is the definition and discretisation of realistic Representative Volume Elements. A geometrically-based weave generator is developed to produce realistic geometrical configurations of the reinforcing textile. This generator takes into account the contact conditions between the yarns in the reinforcement by means of an iterative scheme, taking into account the tension in the yarns in an implicit manner. The shape of the yarns cross sections can also be adapted as a function of the contact conditions using a level set-based post-processor. This allows a seamless transition towards an eXtended Finite Element scheme (XFEM), in which the obtained reinforcement geometry is subsequently exploited to derive the mechanical properties of the composite system using computational homogenisation.