Evaluating the wear resistance of a modified design of a radial bearing performing helical motions.

Abstract

The paper presents a computational model of motion, in the operating clearance of a modified design of a radial sliding bearing with a metallic coating on the shaft surface, of a truly viscous lubricant, taking into account compressibility. A case is considered when a shaft with a metallic coating compensating for an emergency shortage of lubricant performs rotational or helical motions. Based on the dimensionless equation of motion of a truly viscous liquid for the case of a "thin layer", the continuity equation taking into account the compressibility of the lubricant, the equation of state, as well as the equation describing the molten contour of the shaft surface, the velocity and pressure field in the lubricating layer is found. Analytical dependencies for the basic operating characteristics of the bearing are obtained. The influence of the compressibility parameter and the parameter due to the presence of a coating melt on the shaft surface on the bearing performance is evaluated. doi 10.54708/19926502_2024_28310563