Experimental study of bending behaviour of reinforcements
Résumé
In composite reinforcement shaping, textile preform undergo biaxial tensile deformation, in plane shear deformation, transverse compaction and out-of-plane bending deformations. Up today, bending deformations are neglected in some simulation codes but taking into account them would give more accurate simulations of forming especially for stiff and thick textiles. Bending behaviour is speci c because the reinforcements are structural parts and out of plane properties cannot be directly deduced from in-plane properties, like continuous material. Because the standard tests are not adapted for sti ff reinforcements with non linear behaviour a new exometer using optical measurements has been developed to test such reinforcements. This new apparatus enables to carry out a set of cantilever tests with di erent histories of load.
Origine : Fichiers produits par l'(les) auteur(s)
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