An efficient numerical model for the sound radiation from a supported rail
An efficient numerical model for the sound radiation from a supported rail
In this work, the sound radiation of a supported rail is investigated using a numerical 2.5D Finite Element model that is coupled with a 2.5D Boundary Element model. The vibration of the track is modelled by coupling the infinite rail to an equivalent continuous double-layer support and is used as input for calculating the consequent sound radiation. An interpolation method that allows for a quick solution of the boundary element calculations is proposed and validated by comparison with an analytical solution, showing differences less than 0.1 dB. The assembled model is used for calculating the sound radiation from the rail in terms of sound power per unit squared force applied to the rail head in vertical and lateral directions for three different rail configurations. The transfer functions obtained can be used in rolling noise calculations. The proposed interpolation method allows calculations that are more than 100 times faster than the regular procedure for the case considered.
International Institute of Noise Control Engineering
Knuth, Christopher
bf51df4d-f96c-4d73-9af5-fa6ed4c6ae59
Squicciarini, Giacomo
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Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
2024
Knuth, Christopher
bf51df4d-f96c-4d73-9af5-fa6ed4c6ae59
Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Knuth, Christopher, Squicciarini, Giacomo and Thompson, David
(2024)
An efficient numerical model for the sound radiation from a supported rail.
In Inter-Noise 24.
vol. 270,
International Institute of Noise Control Engineering.
12 pp
.
(doi:10.3397/IN_2024_3264).
Record type:
Conference or Workshop Item
(Paper)
Abstract
In this work, the sound radiation of a supported rail is investigated using a numerical 2.5D Finite Element model that is coupled with a 2.5D Boundary Element model. The vibration of the track is modelled by coupling the infinite rail to an equivalent continuous double-layer support and is used as input for calculating the consequent sound radiation. An interpolation method that allows for a quick solution of the boundary element calculations is proposed and validated by comparison with an analytical solution, showing differences less than 0.1 dB. The assembled model is used for calculating the sound radiation from the rail in terms of sound power per unit squared force applied to the rail head in vertical and lateral directions for three different rail configurations. The transfer functions obtained can be used in rolling noise calculations. The proposed interpolation method allows calculations that are more than 100 times faster than the regular procedure for the case considered.
More information
Published date: 2024
Identifiers
Local EPrints ID: 502085
URI: http://eprints.soton.ac.uk/id/eprint/502085
ISSN: 0736-2935
PURE UUID: 04f098fd-d87c-431b-8948-f5785ae91f19
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Date deposited: 16 Jun 2025 16:46
Last modified: 22 Aug 2025 02:31
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