Estimation of track decay rates and noise based on laboratory measurements on a baseplate fastening system
Estimation of track decay rates and noise based on laboratory measurements on a baseplate fastening system
The dynamic properties of the rail fastening system affect the damping of the rail and the degree of coupling between the rail and the foundation. It is well known that the rate of decay of vibration along the rail is closely linked to the noise performance of the track. For this reason, the track decay rate (TDR) is used as an important measurable input quantity for models that predict railway rolling noise. This paper investigates whether the TDR can be estimated correctly from laboratory measured dynamic properties of rail fastening systems. The system studied in this work is a commercial two-stage baseplate system that is mounted on a slab track fitted with 60E1 rail. Four different types of rail pads were fitted during the track decay rates measurements. The TWINS model was used to predict the rolling noise using the measured and calculated track decay. The comparison has shown a good agreement between the measured and predicted TDR.
Baseplate, Fastening systems, Railpad, Track decay rates
621-628
Hima, Boniface S.
7760c133-10cd-4f07-b2ac-bfc74470e0d7
Thompson, David J.
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Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Ntotsios, Evangelos
877c3350-0497-4471-aa97-c101df72e05e
Herron, David
0045f248-8091-4bcf-8b0d-6233b929671f
Hima, Boniface S.
7760c133-10cd-4f07-b2ac-bfc74470e0d7
Thompson, David J.
bca37fd3-d692-4779-b663-5916b01edae5
Squicciarini, Giacomo
c1bdd1f6-a2e8-435c-a924-3e052d3d191e
Ntotsios, Evangelos
877c3350-0497-4471-aa97-c101df72e05e
Herron, David
0045f248-8091-4bcf-8b0d-6233b929671f
Hima, Boniface S., Thompson, David J., Squicciarini, Giacomo, Ntotsios, Evangelos and Herron, David
(2021)
Estimation of track decay rates and noise based on laboratory measurements on a baseplate fastening system.
In,
Degrande, G.
(ed.)
Noise and Vibration Mitigation for Rail Transportation Systems.
(Notes on Numerical Fluid Mechanics and Multidisciplinary Design, 150)
Springer Cham, .
(doi:10.1007/978-3-030-70289-2_68).
Record type:
Book Section
Abstract
The dynamic properties of the rail fastening system affect the damping of the rail and the degree of coupling between the rail and the foundation. It is well known that the rate of decay of vibration along the rail is closely linked to the noise performance of the track. For this reason, the track decay rate (TDR) is used as an important measurable input quantity for models that predict railway rolling noise. This paper investigates whether the TDR can be estimated correctly from laboratory measured dynamic properties of rail fastening systems. The system studied in this work is a commercial two-stage baseplate system that is mounted on a slab track fitted with 60E1 rail. Four different types of rail pads were fitted during the track decay rates measurements. The TWINS model was used to predict the rolling noise using the measured and calculated track decay. The comparison has shown a good agreement between the measured and predicted TDR.
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More information
e-pub ahead of print date: 9 April 2021
Additional Information:
Funding Information:
The authors gratefully acknowledge Pandrol Track Systems for providing the rail-fastening system, railpads and organising the TDR measurement at the test track located at the National College for High-Speed Rail, Doncaster. The work described here has been supported by the EPSRC and CDT SIS under the programme grant EP/M025276/1, ‘The science and analytical tools to design long life, low noise railway track systems (Track to the Future)’.
Keywords:
Baseplate, Fastening systems, Railpad, Track decay rates
Identifiers
Local EPrints ID: 485718
URI: http://eprints.soton.ac.uk/id/eprint/485718
ISSN: 1612-2909
PURE UUID: f5c80b87-5fb3-4a93-a75b-5fc4a965d80e
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Date deposited: 15 Dec 2023 17:34
Last modified: 18 Mar 2024 03:26
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Contributors
Author:
Boniface S. Hima
Author:
David Herron
Editor:
G. Degrande
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