Constitutive modelling of fibre-reinforced composites with unidirectional plies using a plasticity-based approach

G.M. Vyas (1) , S.T. Pinho (1) , P. Robinson (1)

1 Department of Aeronautics

This paper presents the development of a constitutive model able to accurately represent the full non-linear mechanical response of polymer-matrix fibre-reinforced composites with unidirectional (UD) plies under quasi-static loading. This is achieved by utilising an elasto-plastic modelling framework. The model captures key features that are often neglected in constitutive modelling of UD composites, such as the effect of hydrostatic pressure on both the elastic and non-elastic material response, the effect of multiaxial loading and dependence of the yield stress on the applied pressure.

Mots clés: Polymer-matrix Composites (PMCs); Stress/strain curves; Non-linear behaviour; Modelling

Domaines: Matériaux

G.M. Vyas, S.T. Pinho, P. Robinson. Constitutive modelling of fibre-reinforced composites with unidirectional plies using a plasticity-based approach. Composites Science and Technology, 2011, ⟨10.1016/j.compscitech.2011.03.009⟩. ⟨hal-00753186⟩