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A multiscale method for frictionless contact mechanics of rough surfaces

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2016
auteur(s) Waddad Yassine; Magnier Vincent; Dufrenoy Philippe; De Saxce Géry
journal (abréviation) Tribology International (Tribol Int)
volume (numéro) 96
pages 109 – 121
résumé An efficient methodology is proposed for the analysis of frictionless contact between rough surfaces. The surface is described by parabolic asperities which deform according to Hertz Theory. The problem is solved considering interactions between elliptic contact zones. Such analysis provides interface laws that are incorporated into a macroscopic numerical model where contact surfaces are flat. This operation is done by means of Love solution for elastic half spaces and the penalty method. A numerical example of this multiscale method is presented to show its robustness. In comparison with a purely numerical model where roughness is explicitly described, the proposed strategy provides good results and saves a considerable amount of time.
mots clés Surface roughness; Hertz theory; Contact mechanics; Finite element method
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