Development of a New Simulation Method for the Time Evolution of Contact Pressure and Wear Distribution on Friction Surfaces

The contact pressure distribution on the friction surfaces of brake pads affects NV performance such as brake squeal, but this is uncertain and changes depending on various factors such as braking force, thermal deformation, and wear. To predict NV problems that may occur in the field, it is necessary to consider changes in contact pressure distribution due to wear. For this reason, a simulation method with low computational costs that can predict the long-term progression of wear and changes in contact pressure distribution is desirable. In this study, we developed a fast simulation method that solves the time evolution of contact pressure and wear distributions by considering only the degrees of freedom on the friction surfaces. We also confirmed the validity of the method by comparing it with the results of FE analysis and measurements.