Dense granular dynamics analysis by a domain decomposition approach

Vincent Visseq (1, 2) , Alexandre Martin (1, 3) , Damien Iceta (1) , Emilien Azéma (1, 4) , David Dureisseix (5) , Pierre Alart (1, 2)

1 LMGC - Laboratoire de Mécanique et Génie Civil
2 M3 - Modélisation Mathématique en Mécanique
3 Remics - Réseaux, Moyens Informatiques, Calcul Scientifique
4 PMMG - Physique et Mécanique des Milieux Granulaires
5 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]

In this article a domain decomposition approach is combined with the nonsmooth contact dynamics approach for analysing the global behaviour and the micromechanical structure of large-scale dense granular systems. Previously introduced and theoretically investigated, this method is herein investigated precisely on two aspects: the properties of the interface operators, especially when applied to the corners of the subdomains, and the influence of the substructuring on the solution of a mechanical test. Such topics are specific to the dense granular systems characterized by the discreteness and the nonsmoothness of their behavior.

Mots clés: granular packing; frictional contact; discrete elements; nonsmooth contact dynamics; domain decomposition method; LMGC90

Domaines: Matériaux et structures en mécanique [physics.class-ph]; Matériaux et structures en mécanique [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Mécanique des matériaux [physics.class-ph]; Mécanique des solides [physics.class-ph]; Mécanique des solides [physics.class-ph]; Mécanique des structures [physics.class-ph]; Mécanique des structures [physics.class-ph]

Vincent Visseq, Alexandre Martin, Damien Iceta, Emilien Azéma, David Dureisseix, et al.. Dense granular dynamics analysis by a domain decomposition approach. Computational Mechanics, 2012, 49 (6), pp.709-723. ⟨10.1007/s00466-012-0699-5⟩. ⟨hal-00689838v2⟩