Micromechanical modelling of viscoelastic-viscoplastic-damage behaviour for polyamide woven fabric composites under cyclic loading.

Abstract

In this paper, a micromechanics model, based on the periodic homogenization method, is utilized to study thermoplastic woven composites. The proposed approach accounts for the microtructure effects and the local behaviour of the matrix accounting for viscoelastic, viscoplastic and damage phenomena. The damage mechanisms occurring into the yarns are modelled through a hybrid micro-phenomenological constitutive law based on the Mori-Tanaka mean field theory. Finally, the model capabilities have been illustrated under both monotonic and oligocyclic loading conditions.