Abstract
The present study was conducted on the disc brake systems of urban railway vehicles to investigate the effects of braking temperature on squeal noise. A finite element method-based analytical model was constructed to predict the generation of squeal noise through the analysis of complex eigenvalues. The reliability of the analytical model was confirmed by verification with experimental results obtained from a test vehicle on an urban railway track in Korea. The braking temperature of the brake system was applied to the analytical model to analyze the effects of braking temperature on squeal noise. This article proposes a brake pad shape to reduce the impact of squeal noise caused by nonuniform contact between the brake disc and the brake pad due to braking temperature. The results from the present study can be used to reduce squeal noise further.
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This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea government (MSIT) (No. 2022R1F1A1061903).
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Seoyeon Ahn completed the Ph.D. in Mechanical Engineering from Kyungpook National University. She is a Researcher at the Korea Automotive Technology Institute and is responsible for the CAE analysis and technical development of chassis design.
Changhyun Sohn received his M.Sc. and Ph.D. in Mechanical Engineering from KAIST in 1985, and 1991, respectively. He is currently a Professor of Mechanical Engineering at Kyungpook National University, Daegu, South Korea. His research interests include computational fluid dynamics, particle image velocimetry, flow induced vibration, Lattice Boltzmann method, parallel computation, and thermal hydraulic.
Sungjin Choi recived the Ph.D. in Mechanical Engineering from Ajou University. He is a Vice President of Convergence Technology R&D Center in Korea Automotive Technology Institute. His research interest is the vehicle dynamics and chassis design.
Chanhyuk Nam received the Ph.D. in Mechanical Engineering from Korea University. He is a Principal Researcher of Vehicle-Platform R&D Center in Korea Automotive Technology Institute. His research interest is the vehicle dynamics an chassis design.
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Ahn, S., Sohn, C., Choi, S. et al. Study on reduction of squeal noise of disc brake system considering braking temperature of urban railway vehicle. J Mech Sci Technol 37, 2253–2262 (2023). https://doi.org/10.1007/s12206-023-0402-0
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DOI: https://doi.org/10.1007/s12206-023-0402-0