Theoretical study of structural effects on the compressive failure of laminate composites
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文摘
In this paper, the compressive failure of long fibre composites due to plastic microbuckling is modelled as a structural instability. On the grounds of the homogenized model proposed by Gardin et al. (1993), the microbuckling problem is defined at the mesoscopic scale by using a double scale kinematics. We have developed a specific finite element which takes into account not only the effects of the initial fibre defect and of the physical matrix non-linearity, but also the effects of structural parameters (ply thickness, stacking sequence, load). This numerical software permits rapid prediction of the failure of various laminate configurations by maximum load computations.

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