A Pragmatic Approach for Modelling the Viscoelastic-Viscoplastic Behaviour of Short-Fibre Reinforced Thermoplastics Coupled with Anisotropic Damage

Delphine Notta-Cuvier (1) , Mariem Nciri (1) , Franck Lauro (1) , Fahmi Chaari (1) , Bassem Zouari , Yamen Maalej

1 LAMIH - Laboratoire d'Automatique, de Mécanique et d'Informatique industrielles et Humaines - UMR 8201

In this paper, a previously developed viscoelastic-viscoplastic behaviour model for short-fibre-reinforced thermoplastics (SFRT) is enriched with matrix ductile damage and fibre/matrix interfacial debonding constitutive laws. Aiming at industrial applications, model development takes special care to ensure a relatively easy characterisation of material parameters, as illustrated with case of a short-glass-fibre-reinforced polypropylene. Numerical simulations are done to assess the capability of the model to account for all specificities of SFRT behaviour with a particular attention paid on the coupled influence of strain rate and microstructure configuration on the initiation and development of matrix damage and fibre/matrix debonding.

Mots clés: Anisotropy; Damage mechanisms; Short-fibre reinforced thermoplastics; Viscoelastic-viscoplastic behaviour

Domaines: Mécanique [physics.med-ph]

Delphine Notta-Cuvier, Mariem Nciri, Franck Lauro, Fahmi Chaari, Bassem Zouari, et al.. A Pragmatic Approach for Modelling the Viscoelastic-Viscoplastic Behaviour of Short-Fibre Reinforced Thermoplastics Coupled with Anisotropic Damage. Applied Composite Materials, 2021, 28 (2), pp.341-368. ⟨10.1007/s10443-020-09855-x⟩. ⟨hal-03446893⟩