Non linear behavior of flax/epoxy unidirectional composite

International audiencePlant-based reinforced polymer often present non linear behavior under tensilesolicitation. It is clearly the case for flax fiber reinforcement for which a yield point separates the composite behavior in two regions. This is visible on experimental curves inarticles that do not deal only with unidirectional reinforcement but also with reinforcement by random mat of flax. In a previous work we proposed a viscolastoplastic model to study the non linear effect