On the prediction of rail cross mobility and track decay rates using Finite Element Models
On the prediction of rail cross mobility and track decay rates using Finite Element Models
Rolling noise can in many cases be predicted with good confidence using analytical models such as TWINS. The most widely used rail model in TWINS consists of a Timoshenko beam on a continuous double elastic foundation. As the model cannot reproduce vertical-lateral cross mobility, this is normally accounted for by using an empirical cross-coupling term. Moreover, effects coming from the periodic support of the rail or deformation of the rail cross-section are not taken into account with a beam on continuous support. Measured decay rates are therefore often used when available in order to improve the reliability of TWINS predictions. The present paper shows how Finite Element Modelling can be used to predict vertical-lateral cross mobility as well as decay rates. This seems especially interesting for new track designs for which no measured decay rates are available. Computational results are compared with measurements performed on a test track and good agreement is found.
2019-2024
Betgen, Benjamin
c721d3ce-68c6-4d5a-8d22-61a03039735f
Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
2015
Betgen, Benjamin
c721d3ce-68c6-4d5a-8d22-61a03039735f
Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
Betgen, Benjamin, Squicciarini, Giacomo and Thompson, David J.
(2015)
On the prediction of rail cross mobility and track decay rates using Finite Element Models.
10th European Congress and Exposition on Noise Control Engineering, Euronoise 2015, , Maastricht, Netherlands.
01 - 03 Jun 2015.
.
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Conference or Workshop Item
(Paper)
Abstract
Rolling noise can in many cases be predicted with good confidence using analytical models such as TWINS. The most widely used rail model in TWINS consists of a Timoshenko beam on a continuous double elastic foundation. As the model cannot reproduce vertical-lateral cross mobility, this is normally accounted for by using an empirical cross-coupling term. Moreover, effects coming from the periodic support of the rail or deformation of the rail cross-section are not taken into account with a beam on continuous support. Measured decay rates are therefore often used when available in order to improve the reliability of TWINS predictions. The present paper shows how Finite Element Modelling can be used to predict vertical-lateral cross mobility as well as decay rates. This seems especially interesting for new track designs for which no measured decay rates are available. Computational results are compared with measurements performed on a test track and good agreement is found.
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Published date: 2015
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Funding Information:
The work presented in this paper has been performed within the ACOUTRAIN project. The support from the European Commission, grant agreement no. 284877 is gratefully acknowledged.
Publisher Copyright:
Copyright © (2015) by EAA-NAG-ABAV, ISSN 2226-5147 All rights reserved
Venue - Dates:
10th European Congress and Exposition on Noise Control Engineering, Euronoise 2015, , Maastricht, Netherlands, 2015-06-01 - 2015-06-03
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Local EPrints ID: 474256
URI: http://eprints.soton.ac.uk/id/eprint/474256
PURE UUID: 1fcf7db4-8dbb-4921-aeb1-d9972db281ab
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Date deposited: 16 Feb 2023 18:06
Last modified: 18 Mar 2024 03:20
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Author:
Benjamin Betgen
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