A discrete model for the propagation of discontinuities in a fluid-saturated medium - Archive ouverte HAL Accéder directement au contenu
Communication Dans Un Congrès Année : 2006

A discrete model for the propagation of discontinuities in a fluid-saturated medium

Résumé

The first part of this manuscript discusses a finite element method that captures arbitrary discontinuities in a two-phase medium by exploiting the partition-of-unity property of finite element shape functions. The fluid flow away from the discontinuity is modelled in a standard fashion using Darcy's relation, and at the discontinuity a discrete analogy of Darcy's relation is used. Subsequently, dynamic shear banding is studied numerically for a biaxial, plane-strain specimen. A Tresca-like as well as a Coulomb criterion are used as nucleation criterion. Decohesion is controlled by a mode-II fracture energy, while for the Coulomb criterion, frictional forces are transmitted across the interface in addition to the cohesive shear tractions. The effect of the different interface relations on the onset of cavitation is studied.
Fichier principal
Vignette du fichier
Rethore2007.pdf (385.4 Ko) Télécharger le fichier
Origine Fichiers produits par l'(les) auteur(s)

Dates et versions

hal-00506330 , version 1 (26-03-2021)

Licence

Identifiants

Citer

Julien Réthoré, René de Borst, Marie-Angèle Abellan. A discrete model for the propagation of discontinuities in a fluid-saturated medium. IUTAM Symposium on Discretization Methods for Evolving Discontinuities, Sep 2006, Lyon, France. ⟨10.1007/978-1-4020-6530-9_19⟩. ⟨hal-00506330⟩
37 Consultations
50 Téléchargements

Altmetric

Partager

Gmail Mastodon Facebook X LinkedIn More