Estimation of track decay rates from laboratory measurements on a baseplate fastening system
Estimation of track decay rates from 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.
Track decay rates, Railpad, Baseplate, Fastening systems
Hima, Boniface S.
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Thompson, David
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Squicciarini, Giacomo
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Ntotsios, Evangelos
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Herron, David
0045f248-8091-4bcf-8b0d-6233b929671f
2019
Hima, Boniface S.
7760c133-10cd-4f07-b2ac-bfc74470e0d7
Thompson, David
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, Squicciarini, Giacomo, Ntotsios, Evangelos and Herron, David
(2019)
Estimation of track decay rates from laboratory measurements on a baseplate fastening system.
13th International Workshop on Railway Noise, , Ghent, Belgium.
16 - 20 Sep 2019.
8 pp
.
Record type:
Conference or Workshop Item
(Paper)
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.
Text
IWRN13_Paper-Boniface Hima
- Accepted Manuscript
More information
Published date: 2019
Venue - Dates:
13th International Workshop on Railway Noise, , Ghent, Belgium, 2019-09-16 - 2019-09-20
Keywords:
Track decay rates, Railpad, Baseplate, Fastening systems
Identifiers
Local EPrints ID: 436920
URI: http://eprints.soton.ac.uk/id/eprint/436920
PURE UUID: 6409a0b1-5e54-46e8-b370-3d901f583b45
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Date deposited: 14 Jan 2020 17:30
Last modified: 17 Mar 2024 03:33
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Contributors
Author:
Boniface S. Hima
Author:
David Herron
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