Finite strain model for contact interface in forming processes

MARIELA LUEGE, BIBIANA LUCCIONI

Technische Universität Berlin

Congreso; 77th Annual Meeting of the Gesellschaft für Angewandte Mathematik und Mechanik e.V. GAMM'06; 2006

GAMM

A phenomenological rate and state-variable friction law for the continuous sliding under lubricated and dry conditions, as it occurs in metal forming processes, is presented in this paper. The contact model is developed within the framework of continuum thermodynamics of irreversible processes with internal variables and for large strains assuming the contact area as a material surface. The model reproduces the boundary friction map resulting from the experiments carried out by Luengo et al.(2000).