Wave interference in railway track due to multiple wheels
Wave interference in railway track due to multiple wheels
A resonance pattern at frequencies from around 400 Hz to 1000 Hz has often been observed from measured rail accelerations. Such resonances are important for rail noise and corrugation. Although this pattern has been reported and discussed in several papers in terms of wave reflections between multiple wheels, the aim of this study is to investigate the generation mechanism of this resonance phenomenon in detail, and to give both mathematical and physical insight. An infinite Timoshenko beam with continuous supports is adopted for modeling the track system, and the point and transfer receptances of the rail for a stationary harmonic excitation are explicitly obtained by the residue theorem. A frequency-domain method is then presented to calculate the power spectral densities of the wheel-track coupled system responses to stochastic irregularities with the moving irregularity model. It is found that the multiple peaks can be explained by using the phase closure principle. Moreover, total reflection between the two wheels may occur at around 700 Hz, which results in the highest peak in the response.
Railway track, phase closure principle, reflection and transmission ratio, track irregularity, wheel-rail interaction resonance
Lei, Simian
a01b765c-e4c7-4470-8c4f-e75e2cf7a9c1
Ge, Yaojun
0a47856e-d839-4c19-9348-71951266e2e7
Li, Qi
193e5502-fc0d-4a67-8b41-ed4d8b560c2f
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
3 March 2022
Lei, Simian
a01b765c-e4c7-4470-8c4f-e75e2cf7a9c1
Ge, Yaojun
0a47856e-d839-4c19-9348-71951266e2e7
Li, Qi
193e5502-fc0d-4a67-8b41-ed4d8b560c2f
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Lei, Simian, Ge, Yaojun, Li, Qi and Thompson, David
(2022)
Wave interference in railway track due to multiple wheels.
Journal of Sound and Vibration, 520, [116620].
(doi:10.1016/j.jsv.2021.116620).
Abstract
A resonance pattern at frequencies from around 400 Hz to 1000 Hz has often been observed from measured rail accelerations. Such resonances are important for rail noise and corrugation. Although this pattern has been reported and discussed in several papers in terms of wave reflections between multiple wheels, the aim of this study is to investigate the generation mechanism of this resonance phenomenon in detail, and to give both mathematical and physical insight. An infinite Timoshenko beam with continuous supports is adopted for modeling the track system, and the point and transfer receptances of the rail for a stationary harmonic excitation are explicitly obtained by the residue theorem. A frequency-domain method is then presented to calculate the power spectral densities of the wheel-track coupled system responses to stochastic irregularities with the moving irregularity model. It is found that the multiple peaks can be explained by using the phase closure principle. Moreover, total reflection between the two wheels may occur at around 700 Hz, which results in the highest peak in the response.
Text
Waves reflections in rails
- Accepted Manuscript
More information
Accepted/In Press date: 6 November 2021
Published date: 3 March 2022
Additional Information:
Funding Information:
The study was supported by the National Natural Science Foundation of China (grant numbers 51878501 and 51778495 ).
Publisher Copyright:
© 2021 Elsevier Ltd
Keywords:
Railway track, phase closure principle, reflection and transmission ratio, track irregularity, wheel-rail interaction resonance
Identifiers
Local EPrints ID: 452808
URI: http://eprints.soton.ac.uk/id/eprint/452808
ISSN: 0022-460X
PURE UUID: 89f1f56e-6a02-4914-9115-5b2fb9beccbe
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Date deposited: 21 Dec 2021 17:34
Last modified: 17 Mar 2024 06:59
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Contributors
Author:
Simian Lei
Author:
Yaojun Ge
Author:
Qi Li
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