STRESS DISTRIBUTION IN ROTATING SOLIDS WITH FRICTIONAL HEAT EXCITED OVER CONTACT REGION

摘要

The present contribution is devoted to discussion of axially symmetric contact problems for two smooth solids, pressed against each other in relative rotation, generating heat due to the friction between them. We discuss and compared solutions for two extreme cases, namely when the unloaded surfaces of solids are thermally insulated, and when the heat exchange is so large that it is justified to assume that the temperature of the outside region of contact can be assumed zero. We prove that the distribution of contact pressure and the radius of contact region are the same in both the cases of thermal conditions. The thermal stresses, however, differ considerably. We analyze the distribution of the second invariant of the stress deviator, and we discuss the possibility of appearance of tensile stresses.