Noise sensitivity analysis of a two-stage baseplate fastening system
Noise sensitivity analysis of a two-stage baseplate fastening system
A study is presented into the sensitivity of rolling noise to design changes in a two-stage baseplate rail fastening system. The focus is on the in-fluence on the rolling noise of three parameters of the fastening system: the stiffnesses of the railpad and the baseplate pad and the thickness of the baseplate that determines its mass and sound radiation ratio. The TWINS model is adapted by introducing the baseplate vibration and sound radiation using re-sults from an experimentally verified 2.5D finite element model. Based on the simulations, an optimum railpad stiffness is identified of around 500 MN/m, based on a baseplate pad stiffness value of 80 MN/m. The thickness of the baseplate has only a small effect on the total rolling noise.
1-8
Ntotsios, Evangelos
877c3350-0497-4471-aa97-c101df72e05e
Hima, Boniface Samwel
7760c133-10cd-4f07-b2ac-bfc74470e0d7
Thompson, David
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Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Herron, David
0045f248-8091-4bcf-8b0d-6233b929671f
10 December 2022
Ntotsios, Evangelos
877c3350-0497-4471-aa97-c101df72e05e
Hima, Boniface Samwel
7760c133-10cd-4f07-b2ac-bfc74470e0d7
Thompson, David
bca37fd3-d692-4779-b663-5916b01edae5
Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Herron, David
0045f248-8091-4bcf-8b0d-6233b929671f
Ntotsios, Evangelos, Hima, Boniface Samwel, Thompson, David, Squicciarini, Giacomo and Herron, David
(2022)
Noise sensitivity analysis of a two-stage baseplate fastening system.
14th International Workshop on Railway Noise, Shanghai, China, , Shanghai, China.
07 - 09 Dec 2022.
.
Record type:
Conference or Workshop Item
(Paper)
Abstract
A study is presented into the sensitivity of rolling noise to design changes in a two-stage baseplate rail fastening system. The focus is on the in-fluence on the rolling noise of three parameters of the fastening system: the stiffnesses of the railpad and the baseplate pad and the thickness of the baseplate that determines its mass and sound radiation ratio. The TWINS model is adapted by introducing the baseplate vibration and sound radiation using re-sults from an experimentally verified 2.5D finite element model. Based on the simulations, an optimum railpad stiffness is identified of around 500 MN/m, based on a baseplate pad stiffness value of 80 MN/m. The thickness of the baseplate has only a small effect on the total rolling noise.
Text
IWRN14_full_paper_for_publication_85
- Accepted Manuscript
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Published date: 10 December 2022
Venue - Dates:
14th International Workshop on Railway Noise, Shanghai, China, , Shanghai, China, 2022-12-07 - 2022-12-09
Identifiers
Local EPrints ID: 483138
URI: http://eprints.soton.ac.uk/id/eprint/483138
PURE UUID: 5f65ca61-133c-4f9e-a17e-c7c09f47e011
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Date deposited: 25 Oct 2023 16:41
Last modified: 18 Mar 2024 03:26
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Contributors
Author:
Boniface Samwel Hima
Author:
David Herron
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