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This paper deals with optimizing the representative volume element (RVE) of 2.5D interlock composites for enhanced damage resistance and elastic stiffness. The elastic moduli of the composite are determined as a volume average of the moduli of the matrix and fiber, while the overall resistance to failure is obtained through incremental use of the 3D Tsai-Wu failure criterion. The variables considered...
Ce travail présente une optimisation du volume élémentaire représentatif (VER) du renfort 3D orthogonal, permettant de prédire la géométrie interne des mèches ainsi que les propriétés mécaniques et à rupture sous chargement uni axial. La méthode d'optimisation appliquée est celle de la programmation séquentielle quadratique (SQP). Les propriétés mécaniques sont déterminées par une homogénéisation...
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