On the theory of thermal elastohydrodynamic lubrication at high slide-rollratios - Circular glass-steel contact solution at opposite sliding

A full numerical solution for the thermal EHL problem in circular contact f ormed by steel-glass conjunctions with slide-roll ratios larger than 2 has been carried out. An anomalous film profile, which is similar to that repor ted by Kaneta et al. (1996), has been obtained. The numerical results by th e authors, involving three basic kinds of film profiles, the kinematic cond itions for the formation of dimples, and the variations of dimples and trac tion behavior with operating conditions, have been carefully compared with the experiments by Kaneta et al., and provided a sound theoretical evidence of the dimple phenomena under steady-state conditions. The present study i ndicates that the temperature-viscosity-wedge effect seems to be an essenti al mechanism for the dimple phenomena.