Residual stresses in ground components caused by coupled thermal and mechanical plastic deformation

The purpose of this paper is to understand the combined effect of thermal and mechanical plastic deformation on residual stresses in ground components. The interactions between a grinding wheel and a workpiece, including both thermal and mechanical interaction, are simulated by triangular surface loads moving with the table speed of grinding. Cooling is modelled by a uniform convection over the grinding surface. It was found that the residual stress distribution is sensitive to some combination of grinding conditions. As the surface residual stresses are concerned, a down-grinding is of advantage when the ratio of horizontal to vertical forces is low, the input heat ̄ux is intermediate and the vertical mechanical traction is high. Under a high heat ̄ux input, a compressive residual stress distribution can be achieved if either the table speed or convection heat transfer coef®cient is high. # 1999 Elsevier Science S.A. All rights reserved.