Modeling of wear of solids at different scales

The paper puts forward an approach to the analysis of stress state and fracture of surface layers in deformed solids. The approach is based on the consideration of contact interaction processes at several scale levels determined by characteristic structural parameters of the surface and subsurface layers of contacting bodies (micro- and mesoscales) and by their macrogeometry. The approach can be used to estimate the influence of geometrical, mechanical and physical characteristics of materials of contacting bodies and the intermediate medium on the performance of friction pairs. Methods of increasing the wear resistance and service life of the pairs and reducing energy loss owing to the control of wear and friction processes in thin surface layers can be developed.