Optimization of Partially Textured Parallel Thrust Bearings with Square-Shaped Micro-Dimples

Abstract

In this study we attempt to find the optimum geometrical parameters of square-shaped micro-dimples imposed on parallel flat bearing surfaces, which give the best tribological performance, including the load capacity and the friction coefficient. An analytical solution of the Reynolds equation for the surfaces involving numerous dimples is presented, then considering the variations of the number of dimples as well as the dimple length, and the height ratios for a constant dimpled length, it is used to get the optimum value of the parameters. It is shown that despite the variations of different studied geometrical parameters, it seems the optimum value of these parameters remains nearly constant.