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European Journal of Applied Mathematics 14 (2003) 465-483
Surface perturbation of an elastodynamic contact problem with friction
Yves Renard 1, 2, Jean-Claude Paumier
(2003)

We consider the dynamical process of an elastic body in unilateral fricitonal contact with a rigid foundation. Friction is modelled with the Coulomb law with a coefficient that depends on the slip velocity. To allow for velocity discontinuities we use the elastodynamic (hyperbolic) framework. Nevertheless, this does not lead to a well-posed problem. To remedy this, we perturb the solution of the elastodynamical problem in a thin layer next to the contact boundary. This is a generalization of an approach previously studied in a one-dimensional case. We establish existence and uniqueness results for the perturbed and regularized problem and provide an interpretation of this perturbation.
1 :  Laboratoire de Mécanique des Contacts et des Structures (LaMCoS)
CNRS : UMR5259 – Institut National des Sciences Appliquées (INSA) - Lyon
2 :  Institut Camille Jordan (ICJ)
CNRS : UMR5208 – Université Claude Bernard - Lyon I – Ecole Centrale de Lyon – Institut National des Sciences Appliquées (INSA) - Lyon
Mathématiques/Analyse numérique