Surface Life Modelling of Tribological Components – From Surface Roughness to Bearings and Gear Life

Abstract

With stringent environmental regulations and tougher economic reasons, tribological components like rolling bearings and gears are constantly under scrutiny when it comes to energy efficiency and reliability. This has driven engineers towards the constant search of new materials, new designs and optimal performance of components, particularly in tribological surfaces. All this has stimulated research with the aim to develop engineering knowledge to better select or better design mechanical components like gears and rolling bearings (often the most loaded surfaces in a machine). This article summarizes efforts in tribological modelling aspects leading to the prediction of different surface failure modes and eventually the life of the whole machine element. Aspects related to surface distress, wear, fatigue, and the competition of these phenomena are discussed.