Author(s)

K. Willner

Abstract

If two rough surfaces are brought into contact, asperities will deform either elastically or plastically. While the mode of initial deformation will depend on geometrical and material properties at any single asperity, the deformation upon unloading and reloading will be in the elastic regime. As it is not feasible to model the behaviour of each single asperity in a structural mechanics application, global contact laws are needed. In the present paper such contact laws are derived for several deformation models. 1 Introduction The derivation of contact laws for rough surfaces is a two step task. First, a description of the rough surface is needed. Possible approaches are statis- tical [3, 4, 8] or fractal models [7, 9]. The second step is the description of the mechanical behaviour of single summits. Earl

Keywords