Investigation of Thermo- Structural Behavior of Ventilation Application on Rail Vehicle Disc Brake

Kedir Mohammed
2015
In recent decades, disc brakes have increasingly become more popular and gradually found their ways in many different types of vehicles, ranging from light motorcycles to heavy road trucks or even trains. They offer several advantages over drum brakes, including better stopping performance (disc cooled readily), easier to control (not self-applying), less prone to brake fade, and quicker recovery from immersion, which largely contributed to their popularity. However, after long repetitive
more » ... g, brake fade could still set in and compromise the performance of a disc brake due to the change of friction characteristics caused by temperature rise and overheating of brake components. Overheated components could further lead to more problems such as thermal cracks, plastic deformation and the life span of a disc brake could be shortened as a result. Therefore, to accurately predict the temperature rise in a disc brake system is of eminent importance in the early design stage. Yet, owing to the interactions of several physical phenomena, prediction of disc brake performance is highly complicated. In this thesis, we were apply modeling to the thermomechanical behavior of the ventilated design of disc and the computational modeling is carried out using FEM .Ventilation applications on brake discs can significantly improve the brake system performance by reducing the heating of the discs. In this study, the thermal behaviors of ventilated brake disc configuration were investigated at repeated brake conditions in terms of heat generation and thermal stresses with finite element analysis. The results were compared with solid brake.
doi:10.20372/nadre/9389 fatcat:kiurhu3wnfcmvoqyauijccgc7e