Influence of the Friction Block Shape and Installation Angle of High-Speed Train Brakes on Brake Noise

Quan, X, Mo, J, Huang, B, Tang, B, Ouyang, H ORCID: 0000-0003-0312-0326 and Zhou, Z (2020) Influence of the Friction Block Shape and Installation Angle of High-Speed Train Brakes on Brake Noise Journal of Tribology, 142 (3). pp. 1-18. ISSN 0742-4787, 1528-8897

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Abstract

In this study, experiments are conducted to evaluate the effects of friction block shapes and installation angles on the brake noise of high-speed trains on a customized small-scale brake dynamometer. Friction blocks in three different shapes (circle, triangle, and hexagon) and triangular/hexagonal friction blocks at different installation angles are used in the tests. The results indicate that the circular and triangular blocks exhibit low sound pressure with multiple harmonics, whereas the hexagonal friction block produces the highest sound pressure with a single dominant frequency. This difference is attributed to the high contact pressure and severe wear on the surface of the hexagonal friction block. Differences in the installation angle of the triangular/hexagonal friction blocks affect wear debris behavior, distribution of contact pressure, and contact state of the friction interface, consequently influencing noise performance.

Item Type:	Article
Uncontrolled Keywords:	friction block shape characteristics, brake noise, surface morphology, contact pressure
Divisions:	Faculty of Science & Engineering > School of Engineering
Depositing User:	Symplectic Admin
Date Deposited:	15 Jun 2021 08:55
Last Modified:	24 Jan 2026 02:59
DOI:	10.1115/1.4045262
Related Websites:	Author Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3126072
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