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Nouvelle modélisation multiparticulaire pour l'analyse des efforts dans les plaques composites multicouches impactées

Abstract : We propose a numerical model of composite materials multilayered plates when submitted to the impact of dynamic loading. This model enables us to determine the stresses resulting from impact, in the aim to study some damages like delamination. The new model used is called multiparticular modelisation of multilayered materials (M4). It considers the tridimensional object having a bidimensional geometry with an increased number of kinetic fields. Stresses appear naturally at the interface between the layers. These stresses can then be related to the delamination phenomenon. The bibliographic analysis shows that this model is pertinent for the relatively high velocity impacts. For this model used, the dynamic numerical code is based upon the finite element method. The finite element code obtained is valided. After that, we use it to analyse stresses in an impacted multilayered plate. We show then from an example, that this model is pertinent and able to determine simply and rapidly useful informations for the study of different aspects of the delamination phenomenon (initiation, propagation and delamination area).
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Mourad Smaoui. Nouvelle modélisation multiparticulaire pour l'analyse des efforts dans les plaques composites multicouches impactées. Modélisation et simulation. Ecole Nationale des Ponts et Chaussées, 1996. Français. ⟨tel-00529386⟩

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