The influence of the braking disc construction on the heating of friction pair (disc–pads)

Abstract

During the vehicle exploitation in the conditions of stop and go, or during to the maintain of constant vehicle speed on the long downhills, it comes to the generation of high temperatures on the brake system executive organs. With the correct design of the brake disc, the generation of the excessive temperature can be avoided, what is and the purpose of this study. In order to determine the influence of the brake disc design on the heating, were analysed four brake discs with different design. One brake disc was a full cross-section disc, while the other three were ventilated brake discs. The ribs shape in the case of the ventilated brake discs were radial, 48 vane and pillar vane. The numerical approach (FEM) was used to investigate the thermal problem (Transient Structural module), where ANSYS software was used to achieve this task. The highest temperatures were obtained in the case of the full cross-section disc, while the lowest temperatures were obtained in the case of the ventilated braking disc with 48 vane ribs. The conclusions, which are the result of this research, indicate that the design of the ribs of the brake disc has significant influence on the heating of brake system.