Abstract
Two numerical models, 2D and 3D, have been developed in order to study the behaviour of cross-ply laminates during multiplication of transverse cracks. The displacement and stress fields have been evaluated by the finite-element method in an elementary cell which is characteristic of regularly spaced cracks. The longitudinal stiffness reduction has then been deduced as a function of the transverse crack multiplication. In the case of quasi-static tensile tests, the 2D model has been used to estimate the initiation and development of transverse cracking. The different numerical results obtained have been compared with experimental results.
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