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Hybrid model for prediction of impact noise generated at railway crossings

Hybrid model for prediction of impact noise generated at railway crossings
Hybrid model for prediction of impact noise generated at railway crossings

A hybrid model for the prediction of impact noise at railway crossings is presented. The hybrid model combines the simulation of vertical wheel‒rail contact force in the time domain and the prediction of sound pressure level using a linear frequency-domain model. The time-domain model uses moving Green’s functions for the vehicle and track models (accounting for wheel flexibility and a discretely supported rail with space-variant beam properties) and a non-Hertzian wheel‒rail contact model. The time-domain and frequency-domain models are coupled based on the concept of an equivalent roughness spectrum. The model is demonstrated by investigating the influence of axle load, vehicle speed and wheel profile on generated impact noise levels. A negligible influence on impact noise is observed for axle loads in the interval 15–25 tonnes. On the other hand, increasing vehicle speed from 80 to 150 km/h, or comparing a nominal S1002 wheel profile with a severely hollow worn profile, result in substantially higher levels of impact noise; for the given wheel and track conditions the differences are in the order of 10 dB(A).

1612-2909
759-769
Springer Verlag
Torstensson, P.T.
4714e40e-0ae3-481b-b78d-6454926c695c
Squicciarini, G.
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Krüger, M.
7e7ad98c-6251-4fc8-be98-87a61ab9fb09
Nielsen, Jens C.O.
d4666a75-b10f-4712-8608-e78bddf02f7f
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
Anderson, David
Gautier, Pierre-Etienne
Iida, Masanobu
Nelson, James T.
Thompson, David J.
Tielkes, Thorsten
Towers, David A.
de Vos, Paul
Nielsen, Jens C.O.
Torstensson, P.T.
4714e40e-0ae3-481b-b78d-6454926c695c
Squicciarini, G.
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Krüger, M.
7e7ad98c-6251-4fc8-be98-87a61ab9fb09
Nielsen, Jens C.O.
d4666a75-b10f-4712-8608-e78bddf02f7f
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
Anderson, David
Gautier, Pierre-Etienne
Iida, Masanobu
Nelson, James T.
Thompson, David J.
Tielkes, Thorsten
Towers, David A.
de Vos, Paul
Nielsen, Jens C.O.

Torstensson, P.T., Squicciarini, G., Krüger, M., Nielsen, Jens C.O. and Thompson, David J. (2018) Hybrid model for prediction of impact noise generated at railway crossings. In, Anderson, David, Gautier, Pierre-Etienne, Iida, Masanobu, Nelson, James T., Thompson, David J., Tielkes, Thorsten, Towers, David A., de Vos, Paul and Nielsen, Jens C.O. (eds.) Notes on numerical fluid mechanics and multidisciplinary design. (Notes on Numerical Fluid Mechanics and Multidisciplinary Design, , (doi:10.1007/978-3-319-73411-8_60), 139) Cham. Springer Verlag, pp. 759-769. (doi:10.1007/978-3-319-73411-8_60).

Record type: Book Section

Abstract

A hybrid model for the prediction of impact noise at railway crossings is presented. The hybrid model combines the simulation of vertical wheel‒rail contact force in the time domain and the prediction of sound pressure level using a linear frequency-domain model. The time-domain model uses moving Green’s functions for the vehicle and track models (accounting for wheel flexibility and a discretely supported rail with space-variant beam properties) and a non-Hertzian wheel‒rail contact model. The time-domain and frequency-domain models are coupled based on the concept of an equivalent roughness spectrum. The model is demonstrated by investigating the influence of axle load, vehicle speed and wheel profile on generated impact noise levels. A negligible influence on impact noise is observed for axle loads in the interval 15–25 tonnes. On the other hand, increasing vehicle speed from 80 to 150 km/h, or comparing a nominal S1002 wheel profile with a severely hollow worn profile, result in substantially higher levels of impact noise; for the given wheel and track conditions the differences are in the order of 10 dB(A).

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e-pub ahead of print date: 20 May 2018
Published date: 2018

Identifiers

Local EPrints ID: 421372
URI: http://eprints.soton.ac.uk/id/eprint/421372
ISSN: 1612-2909
PURE UUID: c5295631-8be4-4622-bd42-48561decfd78
ORCID for G. Squicciarini: ORCID iD orcid.org/0000-0003-2437-6398
ORCID for David J. Thompson: ORCID iD orcid.org/0000-0002-7964-5906

Catalogue record

Date deposited: 06 Jun 2018 16:30
Last modified: 18 Feb 2021 17:17

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Contributors

Author: P.T. Torstensson
Author: G. Squicciarini ORCID iD
Author: M. Krüger
Author: Jens C.O. Nielsen
Editor: David Anderson
Editor: Pierre-Etienne Gautier
Editor: Masanobu Iida
Editor: James T. Nelson
Editor: David J. Thompson
Editor: Thorsten Tielkes
Editor: David A. Towers
Editor: Paul de Vos
Editor: Jens C.O. Nielsen

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