Study of adhesion during actual contact area formation at light loads

The present work considers simulation of contact area formation using the contact models of Hertz, DMT and JKR. The purpose of this work was to study development of real contact between rough surfaces taking into account the action of adhesion. The model of the Winkler foundation is used to describe the elastic properties of the rough surface. Solids with thin hard coatings were used as test specimens. The surface topography was measured with typical AFM at different scale levels. The data on the specific surface energy of specimens are obtained with contact adhesion meter developed in MPRI (Gomel, Belarus). The obtained value of specific surface energy was used in computer simulations of real contact using the AFM images.