Impact on 3D Carbon/Carbon Composites : a Meso-Scale Approach

O. Allix , M. Dommanget , Michel Gratton , P. Héreil

A method for the fracture prediction under dynamic loading of small structures made of a 3D Carbon/Carbon composite is proposed. Due to the length scale of the loading, the notion of a homogenized material is meaningless ; our choice herein is to model, identify and compute the material at an intermediate or meso scale (fibre strands - matrix blocks). Our idea is that, due to the smallness of the meso scale, the previous description of the damage mechanisms should be valid even for high-rate loading. This meso-modelling is based on static and dynamic tests. Changing scale methods are applied to identify the mesoscopic model parameters (damage - plasticity - porosity) from static tests. The results from the dynamic computing of plate/plate tests confirm this method.

Domaines: Articles anciens

O. Allix, M. Dommanget, Michel Gratton, P. Héreil. Impact on 3D Carbon/Carbon Composites : a Meso-Scale Approach. Journal de Physique IV Proceedings, 1997, 07 (C3), pp.C3-675-C3-680. ⟨10.1051/jp4:19973115⟩. ⟨jpa-00255400⟩