Mechanical Sciences
Mechanical Sciences
Mechanical Sciences
Articles | Volume 17, issue 1
Articles | Volume 17, issue 1
https://doi.org/10.5194/ms-17-61-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ms-17-61-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 1
Research article
 | 
04 Feb 2026
Research article |  | 04 Feb 2026

Research on the mechanism of metro wheel high-order polygons affecting sound pressure level

Yu Cao and Jianhui Tian

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Short summary
This paper analyses the effects of several typical polygon amplitudes and orders on wheel sound radiation in metro lines. Concurrently, research has found that there is no linear relationship between wheel–rail forces and polygon amplitudes. Furthermore, the noise reduction mechanism of resilient wheels is thoroughly explained in terms of damping, energy dissipation, vibration isolation, decoupling, and acoustic impedance characteristics. 
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