Effect of Dynamic Loading on Wear of Steel in Boundary Lubricated Sliding Contact

Abstract

This paper describes the results of an experimental and theoretical investigation of wear of steel under forced oscillations of applied load in boundary lubricated sliding contact. A special pin-on-disk type wear apparatus, which enabled continuous control of the dynamic loading parameters (mean load, amplitude and frequency of the load oscillations and sliding velocity), has been used in the experimental investigation. Wear rates and surface roughness were measured for various combinations of static and dynamic loading parameters. A wear equation which related wear to the parameters of dynamic loading has been derived. It has been shown both by experimental investigation and theoretical analysis that wear is an increasing function of the mean value of the applied load, amplitude of the load oscillation, and a ratio of the frequency of load oscillation to the sliding velocity.