Overall behaviour of a truss of fibers linked by viscous joints
Résumé
A theoretical method is proposed in order to analyse the behaviour during forming of
short fibre reinforced composites. The method applies to high concentrations of fibres
where the behaviour is assumed to be dominated by fibre-fibre interactions. Fibres are
looked as an assembly of rigid bars linked by viscous joints. The equivalent continuum
constitutive relationship is obtained by assuming a periodic spatial repartition of the
fibres and applying the method of discrete homogenisation. Theoretical developments
lead to two models, a Cosserat continuous medium, or a usual Cauchy one. Lastly a
numerical application to planar composites is presented.
Origine : Fichiers produits par l'(les) auteur(s)
Loading...