On the elastic stress field of tilting roller pairs considering thermal elastohydrodynamic lubrication

A numerical solution of thermal elastohydrodynamic lubrication (TEHL) of finite line contacts for axially profiled and tilted cylindrical roller is presented. The effects of tilting angle, entrainment velocity and slide-roll ratio on the lubricating performance and the subsurface stress field have been investigated specifically from the point of view of the von Mises stress as it provides a better criterion for rolling contact failure and material damage. The results show that tilting angle, entrainment velocity and slide-roll ratio influence the pressure, temperature and von Mises stress distributions. As tilting angle increases, the maximum von Mises stress becomes larger. As entrainment velocity and slide-roll ratio change, the maximum von Mises stress changes in different routes.