Contact Thermal Analysis and Wear Simulation of a Brake Block
The present paper describes an experimental test and a coupled contact-thermal-wear analysis of a railway wheel/brake block system through the braking process. During the test, the friction, the generated heat, and the wear were evaluated. It was found that the contact between the brake block and the wheel occurs in relatively small and slowly moving hot spots, caused by the wear and the thermal effects. A coupled simulation method was developed including numerical frictional contact, transient thermal and incremental wear calculations. In the 3D simulation, the effects of the friction, the thermal expansion, the wear, and the temperature-dependent material properties were also considered. A good agreement was found between the results of the test and the calculations, both for the thermal and wear results. The proposed method is suitable for modelling the slowly oscillating wear caused by the thermal expansions in the contact area.
- Record URL:
- Copyright © 2013 Nandor Bekesi and Karoly Varadi.
- Bekesi, Nandor
- Varadi, Karoly
- Publication Date: 2013
- Media Type: Print
- Features: Figures; Photos; References; Tables;
- Pagination: Article ID 878274
- TRT Terms: Brakes; Braking; Car wheels (Railroads); Friction; Friction brakes; Mathematical models; Railroads; Simulation; Thermal expansion; Thermal properties; Wear
- Subject Areas: Railroads; Safety and Human Factors; Vehicles and Equipment; I91: Vehicle Design and Safety;
- Accession Number: 01496267
- Record Type: Publication
- Files: TRIS
- Created Date: Jun 5 2013 10:42AM