High performance computing of discrete nonsmooth contact dynamics with domain decomposition

Vincent Visseq (1, 2) , Pierre Alart (2, 1, 3) , David Dureisseix (4)

1 LMGC - Laboratoire de Mécanique et Génie Civil
2 M3 - Modélisation Mathématique en Mécanique
3 MIST - Laboratoire de micromécanique et intégrité des structures
4 LaMCoS - Laboratoire de Mécanique des Contacts et des Structures [Villeurbanne]

We investigate two algorithms for solving large-scale granular problems using domain decomposition methods. These numerical schemes can be connected to classical domain decompositions, with and without overlapping, developed in continuum mechanics. The two algorithms are compared in terms of implementation and parallel performance. We focus the numerical study on communication procedures between processors, load balancing and scalability, topics particularly crucial in nonlinear evolutive problems.

Mots clés: LMGC90; additive Schwarz method; FETI method; message passing; granular material; discrete elements; multibody; parallel computing; distributed memory

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des solides [physics.class-ph]; Calcul parallèle, distribué et partagé [cs.DC]; Analyse numérique [cs.NA]

Vincent Visseq, Pierre Alart, David Dureisseix. High performance computing of discrete nonsmooth contact dynamics with domain decomposition. International Journal for Numerical Methods in Engineering, 2013, 96 (9), pp.584-598. ⟨10.1002/nme.4578⟩. ⟨hal-00918064⟩