The University of Southampton
University of Southampton Institutional Repository

The sound radiation of a railway rail fitted with acoustic shielding

The sound radiation of a railway rail fitted with acoustic shielding
The sound radiation of a railway rail fitted with acoustic shielding
© 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling. All rights reserved. The most important source of environmental noise from railways is rolling noise; the component of noise radiated by the rail is often the highest, and dominates the important mid-frequency region between 400 and 2000 Hz. One measure to reduce the noise from the rail at source is a rail damper which increases the track decay rate. Several such products are now available. This paper investigates an alternative which is a shield fitted around the lower part of the rail. A layer of porous material is also included to increase the absorption inside the shield. The sound radiation of this concept is investigated theoretically by using a 2.5D finite element / boundary element approach. The overall noise reduction that can be achieved by this measure when applied to the railway track is determined by combining the numerical results with estimates of rolling noise from the TWINS model. For a freight train on a track with soft rail pads an overall noise reduction of 2.5 dB(A) is predicted whereas for a track with stiff rail pads the reduction is only 1 dB(A).
2.5D finite element, Boundary element approach, Noise reduction, Porous material, Railway rail
International Institute of Acoustics and Vibration (IIAV)
Zhang, X.
2d0ba27f-b78b-4823-938f-fa42d6787ab5
Thompson, D.
bca37fd3-d692-4779-b663-5916b01edae5
Ryue, J.
ae3a4884-7689-4b85-8a55-1fecee512d0b
Jeong, H.
2be64b0a-43e8-4bf6-8c17-0f9177a3fa70
Squicciarini, G.
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Stangl, M.
c5f1f82d-3398-496b-b1b8-c69c1169d1de
Zhang, X.
2d0ba27f-b78b-4823-938f-fa42d6787ab5
Thompson, D.
bca37fd3-d692-4779-b663-5916b01edae5
Ryue, J.
ae3a4884-7689-4b85-8a55-1fecee512d0b
Jeong, H.
2be64b0a-43e8-4bf6-8c17-0f9177a3fa70
Squicciarini, G.
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Stangl, M.
c5f1f82d-3398-496b-b1b8-c69c1169d1de

Zhang, X., Thompson, D., Ryue, J., Jeong, H., Squicciarini, G. and Stangl, M. (2018) The sound radiation of a railway rail fitted with acoustic shielding. In, 25th International Congress on Sound and Vibration 2018, ICSV 2018 : Hiroshima Calling. (25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling, 7) International Institute of Acoustics and Vibration (IIAV).

Record type: Book Section

Abstract

© 25th International Congress on Sound and Vibration 2018, ICSV 2018: Hiroshima Calling. All rights reserved. The most important source of environmental noise from railways is rolling noise; the component of noise radiated by the rail is often the highest, and dominates the important mid-frequency region between 400 and 2000 Hz. One measure to reduce the noise from the rail at source is a rail damper which increases the track decay rate. Several such products are now available. This paper investigates an alternative which is a shield fitted around the lower part of the rail. A layer of porous material is also included to increase the absorption inside the shield. The sound radiation of this concept is investigated theoretically by using a 2.5D finite element / boundary element approach. The overall noise reduction that can be achieved by this measure when applied to the railway track is determined by combining the numerical results with estimates of rolling noise from the TWINS model. For a freight train on a track with soft rail pads an overall noise reduction of 2.5 dB(A) is predicted whereas for a track with stiff rail pads the reduction is only 1 dB(A).

Full text not available from this repository.

More information

Published date: 2018
Keywords: 2.5D finite element, Boundary element approach, Noise reduction, Porous material, Railway rail

Identifiers

Local EPrints ID: 430205
URI: http://eprints.soton.ac.uk/id/eprint/430205
PURE UUID: 07eb8155-c345-4a86-a8cd-c66fadef85ec
ORCID for D. Thompson: ORCID iD orcid.org/0000-0002-7964-5906
ORCID for G. Squicciarini: ORCID iD orcid.org/0000-0003-2437-6398

Catalogue record

Date deposited: 16 Apr 2019 16:30
Last modified: 20 Jul 2019 01:16

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×