Stratification of lubricating material in radial bearings

The technique of calculating the radial sliding bearings of infinite and finite length running on a double-layer stratified lubricant is presented. The technique is based on the use of the self-simulated variable that allows obtaining the exact self-similar problem solution both in polar and in cylindrical coordinates, as well as the parameter value characterizing the interface of the stratified layers. These tasks are complicated by the simultaneous consideration of the lubricant viscosity-pressure relation, the presence of the friction-adapted supporting profile of the bearing bush, and the effect of the axial lubricant feed in the finite-length bearing. As a result, computational models are obtained for two-layer stratified lubricants the numerical analysis of which allows establishing the impact of variables on the basic bearings performance - components of the bearing capacity vector, friction forces, as well as optimal values of the reference profile parameter, the lubricant supply, and its viscous ratio in the stratified layers.