The effect of rail shields on railway rolling noise
The effect of rail shields on railway rolling noise
Rail shields have been developed recently which are fitted around the lower part of the rail and are intended to reduce the noise radiated by the rail. Their effect on the sound radiation is investigated theoretically by using a 2.5D finite element / boundary element approach including the acoustic effects of the ground. The insertion loss due to the rail shields is predicted and compared with available measured data and the most important features of the shields are identified. The overall noise reduction when applied to railway track is determined by combining the numerical results with estimates of rolling noise from the TWINS model. The rail shields are effective in the middle frequency range, where the rail is the most important noise source. The overall A-weighted sound level is reduced by 2-3 dB for a track with soft rail pads, and 1-2 dB for a track with stiff pads.
2.5D methods, Railway rolling noise, acoustic shielding, track noise reduction
Zhang, Xianying
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Thompson, David
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Ryue, Jungsoo
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Jeong, Hongseok
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Squicciarini, Giacomo
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2022
Zhang, Xianying
774a7ab2-2818-4ae7-8a3f-d03c3f175a52
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Ryue, Jungsoo
06336056-2b9b-4620-9c4a-f2cbd602ab3e
Jeong, Hongseok
0c843d45-1cf5-4dc4-98cf-1598667b1128
Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Zhang, Xianying, Thompson, David, Ryue, Jungsoo, Jeong, Hongseok and Squicciarini, Giacomo
(2022)
The effect of rail shields on railway rolling noise.
International Journal of Rail Transportation, 11 (4).
(doi:10.1080/23248378.2022.2106599).
Abstract
Rail shields have been developed recently which are fitted around the lower part of the rail and are intended to reduce the noise radiated by the rail. Their effect on the sound radiation is investigated theoretically by using a 2.5D finite element / boundary element approach including the acoustic effects of the ground. The insertion loss due to the rail shields is predicted and compared with available measured data and the most important features of the shields are identified. The overall noise reduction when applied to railway track is determined by combining the numerical results with estimates of rolling noise from the TWINS model. The rail shields are effective in the middle frequency range, where the rail is the most important noise source. The overall A-weighted sound level is reduced by 2-3 dB for a track with soft rail pads, and 1-2 dB for a track with stiff pads.
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Accepted/In Press date: 23 July 2022
e-pub ahead of print date: 28 July 2022
Published date: 2022
Keywords:
2.5D methods, Railway rolling noise, acoustic shielding, track noise reduction
Identifiers
Local EPrints ID: 469667
URI: http://eprints.soton.ac.uk/id/eprint/469667
ISSN: 2324-8378
PURE UUID: e4cb60bb-8aeb-4919-bee1-dd9db4adf079
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Date deposited: 21 Sep 2022 17:05
Last modified: 17 Mar 2024 07:28
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Author:
Xianying Zhang
Author:
Jungsoo Ryue
Author:
Hongseok Jeong
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