Polarization of contact forces in multi-contact systems

Serge Dumont (1) , Jérôme Fortin (2) , Youssef Ouafik (3)

1 LAMFA - Laboratoire Amiénois de Mathématique Fondamentale et Appliquée - UMR CNRS 7352
2 LTI - Laboratoire des technologies innovantes - UR UPJV 3899
3 CEMEF - Centre de Mise en Forme des Matériaux

The aim of this study is to identify the homogenized laws modeling the overall behaviour of multi-contact systems. At the moment, these systems are generally analyzed either by continuum mechanics or micro-mechanics and a multi-scale approach. These approaches differ from the phenomenological approach traditionally used for modeling the behavior of solid materials which is based on mathematical formulations developed in the framework of thermodynamics, whose constants are determined from results of laboratory tests. The lack of basic physics in these formulations leads to mathematical models that are often complex and difficult to identify. The multi-scale approach appears well suited to address these difficulties. This study aims at quantification using the Discrete Element method (Jean, 1999; Fortin et al., 2005) polarization phenomena of contact forces.

Mots clés: Discrete Element Method; Friction; Multi-scale Method

Domaines: Mécanique des structures [physics.class-ph]; Mécanique des solides [physics.class-ph]

Serge Dumont, Jérôme Fortin, Youssef Ouafik. Polarization of contact forces in multi-contact systems. Revue Européenne de Mécanique Numérique/European Journal of Computational Mechanics, 2010, 19 (1-3), pp.77-88. ⟨10.3166/ejcm.19.77-88⟩. ⟨hal-01113743⟩