Modeling of motion mechanism in the intermediate layer between contacting bodies in compression shear

Abstract

The conditions of force interaction and friction on the contact between bodies are related to the intermediate layer structure in the contact region, i.e., to the appearance of fracture products or intensive deformation in this region. The subsequent interaction between the bodies occurs through elements of the intermediate layer structure. In the present paper, we determine conditions and the basic mechanism controlling the formation of the interface structure when the interaction between the bodies is implemented through structure elements of the intermediate layer (balls) which are capable of rolling.

We experimentally modeled two modes of motion, namely, the approach of elements to each other and their turn and rolling on the contact interface.We constructed an analytic model corresponding to the mechanism of transformed (viscous) friction under compression shear conditions. We also considered the modes of ball mutual rotation and rolling in direct contact and the effects of free volume variations (dilatancy) near the balls due to these motions.