Hydrodynamic journal bearing with slippage sleeve surface

The performance of the hydrodynamic journal bearing with slippage sleeve surface is analytically investigated based on the contact-fluid interfacial limiting shear strength model. In this bearing, the interfacial slippage occurs on the whole sleeve surface in the lubricated area, but is absent on the whole shaft surface. The calculation results show that the interfacial slippage on the whole sleeve surface considerably reduces the load-carrying capacity of the bearing, but also considerably reduces the friction coefficient of the bearing as compared to the results of the conventional hydrodynamic journal bearing (without the interfacial slippage) for the same operating condition. It was also found that with the reduction of the contact-fluid interfacial shear strength on the sleeve surface and thus with the increase of the interfacial slippage on the sleeve surface, the load-carrying capacity of the bearing is improved, but the friction coefficient of the bearing is reduced. The results show the potential application of this mode of bearing in reducing the friction coefficient and energy conservation.