Numerical simulation of running-in process of sliding surfaces based on Bi-Gaussian roughness model

Abstract

In this study, a new analytical model is developed to evaluate the frictional properties of plateau surface structures by numerical simulation. Specifically, the plateau surface structure is modeled using a Bi-Gaussian roughness model, and the model is implemented in a FEM analysis to demonstrate, for example, that the effect of changes in plateau fraction on the Stribeck curve can be easily quantified. The model can be applied to a wide range of applications, such as the evaluation of the effect of anisotropic roughness at the valleys of a plateau surface structure on frictional properties, and frictional simulations that take into account shape and roughness changes due to running-in processes. Therefore, it is expected that the model is expected to be a useful tool for CAE of sliding surface design.