Technological thermal stresses in shrink fit of cylindrical bodies taking into accounting plastic flows

This paper presents a solution of a sequence of one-dimensional boundary-value problems of thermal stresses defining the elastic-plastic deformation processes used in the shrink fitting of cylindrical bodies. The origin and development of plastic flow in the materials of the assembly elements are studied taking into account the temperature dependence of the yield strength of these materials. During temperature equalization, the flow can slow down, followed by unloading and formation of a residual stress field providing an interference fit. The conditions of formation and motion of the boundaries of the elastic and plastic states in both plastic flow and during unloading are determined.