A Simulation Analysis Of Surface Defect Effect On Radial Sliding Bearing

The radial sliding bearing is one of the most common components in modern machinery. It can bear radial load, reduce the friction and wear. The researches on the lubrication properties of the bearing have significant role in extending the service life of equipment and improving the equipment reliability. Up to now, the study of the theory of the radial sliding bearing is perfect. But the study of the theory of the surface defects on bearing is not so much.In this paper, the theoretical model of radial sliding bearing is established based on the Reynolds equation and lubricational theory, and then the numerical calculation method is adopted to solve the problems. Through theoretical analysis, oil film thickness distribution, the oil film pressure distribution in the process of bearing lubrication, as well as the influence of bearing parameters of lubrication state parameters are obtained. The numerical simulations on the lubrication of radial sliding bearing with various forms of defects are also performed in this paper. The influences of different forms of surface defects and the defect’s parameters on the lubrication state parameters are studied. The results show that the position of the surface defects has the biggest influence on lubrication state parameters; the values of defect parameters also have different influences on the lubrication state. Most surface defects have negative effects on the bearing lubrication, but some certain surface defect arrangements are beneficial for bearing lubrication.In this paper, the theoretical research results can well enrich the tribology theory of surface defects on radial sliding bearing, and it can provide theoretical reference for related research on radial sliding bearing.