철도차량용 브레이크 패드의 형상이 성능에 미치는 영향

초록

The disk brake system of a vehicle dissipates its kinetic energy as heat. This energy conversion is notoriously well known as one of most difficult phenomena to analyze. And the contact performance is an important issue especially to the brake system of high-speed railway trains mainly due to the unstable contact between brake disks and brake pads at high speed that causes severe frictional heat concentrated at a point and may develop hot spots on the disk surface. These hot spots are followed by thermal cracking and uneven wear of brake disks and brake pads and shortening their service life. In this study, thermo-mechanical analysis is conducted on different railway brake pad models using Abaqus FEA software to compare thermo-mechanical behavior according to the shape of the brake pads. In the analysis, the contact performance is compared by analyzing the contact pressure distribution of friction material surfaces of each model.