Coefficient of Friction at Rest of Rough Surfaces

Abstract

At present, the process of designing dry friction units for mechanical engineering and some other structures is becoming more and more laborious, forcing designers to make more and more efforts in this work. A significant complication of the work performed gives the random nature of the roughness of both contacting surfaces and this circumstance forces the designers to look for new ways to solve existing problems. In this paper, we consider the contact interaction of two rough parts, the roughness of which is modeled by spherical surfaces. The proposed friction pair model makes it possible to estimate the interaction forces of contacting rough surfaces acting between the considered surfaces. It should be emphasized that this paper considers the interaction of contacting bodies with an applied external force capable of starting the relative movement / sliding of the considered bodies with rough surfaces.