Abstract:The hydrodynamic lubrication model of sliding friction pair with surface texture was calculated by using numerical methods. The effect of surface texture on the lubrication performance of friction pair was theoretically analyzed based on different cross-sections and surface profiles. The optimal parameter and type of surface texture were obtained under specific condition. Results show that there is a great influence on the frictional coefficient and carrying capacity of friction pair caused by different cross-sections and surface profiles of surface texture; all of the cross-sections have an optimal diameter making the frictional coefficient minimum. It was discovered that making the underside of micro-pits with rectangular cross-section tilted improves the carrying capacity of textured region significantly and reduces the frictional coefficient largely. In all kinds of typical surface profiles, the inverted triangle surface profile whose bottom edge close to the entrance obtains the best lubrication performance. Moreover, great improvement was acquired on carrying capacity if tilted underside and surface profiles are combined optimally.