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

Francis Praud (1, 2) , Georges Chatzigeorgiou (1) , Yves Chemisky (1) , Fodil Meraghni (1)

1 LEM3 - Laboratoire d'Etude des Microstructures et de Mécanique des Matériaux
2 IRT Jules Verne - Institut de Recherche Technologique Jules Verne [Bouguenais]

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.

Mots clés: viscoplasticity; periodic homogenization; constitutive laws; damage; viscoelasticity

Domaines: Mécanique des matériaux [physics.class-ph]; Mécanique des solides [physics.class-ph]

Francis Praud, Georges Chatzigeorgiou, Yves Chemisky, Fodil Meraghni. Micromechanical modelling of viscoelastic-viscoplastic-damage behaviour for polyamide woven fabric composites under cyclic loading.. 17th European Conference on Composite Materials (ECCM17 ), Jun 2016, Munich, Germany. ⟨hal-01365023⟩