Numerical Modelling Of Contact For Low Velocity Impact Damage In Composite Laminates
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J. Bonini, F. Collombet & J.L. Lataillade
Numerical modelling of contact for low velocity impact damage in composite laminates J. Bonini, F. Collombet, J.L. Lataillade Esplanade des Arts et Metiers, INTRODUCTION A low velocity impact on a composite laminate can cause the appearance of damage invisible to the naked eye. The impact phenomenology shows a succession of multi-scale damage phenomena due to the structural heterogeneity of the material. The numerical modelling of contact and links enables us to represent in a dynamic explicit finite element code - Plexus  - two of those phenomena : - the application of impact forces to the structure versus time, essential step before the implementation of a representative local behaviour law. - the delamination, damage factor on a ply scale, which has an effect on the structural behaviour of the composite laminate.