A viscoelastic-viscoplastic model for short-fibre reinforced polymers with complex fibre orientations - Université Polytechnique des Hauts-de-France Accéder directement au contenu
Communication Dans Un Congrès Année : 2015

A viscoelastic-viscoplastic model for short-fibre reinforced polymers with complex fibre orientations

Résumé

This paper presents an innovative approach for the modelling of viscous behaviour of short-fibre reinforced composites (SFRC) with complex distributions of fibre orientations and for a wide range of strain rates. As an alternative to more complex homogenisation methods, the model is based on an additive decomposition of the state potential for the computation of composite's macroscopic behaviour. Thus, the composite material is seen as the assembly of a matrix medium and several linear elastic fibre media. The division of short fibres into several families means that complex distributions of orientation or random orientation can be easily modelled. The matrix behaviour is strain-rate sensitive, i.e. viscoelastic and/or viscoplastic. Viscoelastic constitutive laws are based on a generalised linear Maxwell model and the modelling of the viscoplasticity is based on an overstress approach. The model is tested for the case of a polypropylene reinforced with short-glass fibres with distributed orientations and subjected to uniaxial tensile tests, in different loading directions and under different strain rates. Results demonstrate the efficiency of the model over a wide range of strain rates.
Fichier principal
Vignette du fichier
epjconf-dymat2015_04008.pdf (298.27 Ko) Télécharger le fichier
Origine : Publication financée par une institution
Licence : CC BY - Paternité

Dates et versions

hal-03433232 , version 1 (29-04-2022)

Licence

Paternité

Identifiants

Citer

Mariem Nciri, Delphine Notta-Cuvier, Franck Lauro, Fahmi Chaari, Bassem Zouari, et al.. A viscoelastic-viscoplastic model for short-fibre reinforced polymers with complex fibre orientations. DYMAT 2015 - 11th International Conference on the Mechanical and Physical Behaviour of Materials under Dynamic Loading, Sep 2015, Lugano, Switzerland. pp.04008, ⟨10.1051/epjconf/20159404008⟩. ⟨hal-03433232⟩
28 Consultations
20 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More