Nonlinear vibration and comfort analysis of high-speed trains moving over railway bridges
Nonlinear vibration and comfort analysis of high-speed trains moving over railway bridges
The ride comfort of high-speed trains passing over railway bridges is studied in this paper. The effects of some nonlinear parameters in a carriage-track-bridge system are investigated such as the load-stiffening characteristics of the rail-pad and the ballast, rubber elements in the primary and secondary suspensions systems. The influence of the track irregularity and train speed on two comfort indicators, namely Sperling's comfort index and the maximum acceleration level, are also studied. Timoshenko beam theory is used for modelling the rail and bridge and two layers of parallel damped springs in conjunction with a layer of mass are used to model the rail-pads, sleepers and ballast. A randomly irregular vertical track profile is modelled, characterised by a power spectral density (PSD). The 'roughness' is generated for three classes of tracks. Nonlinear Hertz theory is used for modelling the wheel-rail contact.
comfort analysis, high-speed train, bridge, non-linear vibration
American Society Of Mechanical Engineers (ASME)
Kargarnovin, M.H.
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Younesian, D.
79db4bfd-a8ea-4f67-9a97-c0d968f3c014
Thompson, D.J.
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Jones, C.J.C.
695ac86c-2915-420c-ac72-3a86f98d3301
2004
Kargarnovin, M.H.
f26966d5-4065-406a-8bba-d6249f98d14c
Younesian, D.
79db4bfd-a8ea-4f67-9a97-c0d968f3c014
Thompson, D.J.
bca37fd3-d692-4779-b663-5916b01edae5
Jones, C.J.C.
695ac86c-2915-420c-ac72-3a86f98d3301
Kargarnovin, M.H., Younesian, D., Thompson, D.J. and Jones, C.J.C.
(2004)
Nonlinear vibration and comfort analysis of high-speed trains moving over railway bridges.
In Proceedings of the 7th Biennial Conference on Engineering Systems Design and Analysis.
American Society Of Mechanical Engineers (ASME)..
Record type:
Conference or Workshop Item
(Paper)
Abstract
The ride comfort of high-speed trains passing over railway bridges is studied in this paper. The effects of some nonlinear parameters in a carriage-track-bridge system are investigated such as the load-stiffening characteristics of the rail-pad and the ballast, rubber elements in the primary and secondary suspensions systems. The influence of the track irregularity and train speed on two comfort indicators, namely Sperling's comfort index and the maximum acceleration level, are also studied. Timoshenko beam theory is used for modelling the rail and bridge and two layers of parallel damped springs in conjunction with a layer of mass are used to model the rail-pads, sleepers and ballast. A randomly irregular vertical track profile is modelled, characterised by a power spectral density (PSD). The 'roughness' is generated for three classes of tracks. Nonlinear Hertz theory is used for modelling the wheel-rail contact.
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Published date: 2004
Venue - Dates:
7th Biennial Conference on Engineering Systems Design and Analysis (ESDA 2004), Manchester, UK, 2004-07-18 - 2004-07-21
Keywords:
comfort analysis, high-speed train, bridge, non-linear vibration
Identifiers
Local EPrints ID: 28139
URI: http://eprints.soton.ac.uk/id/eprint/28139
PURE UUID: be4a1df8-d52f-47eb-8037-7d0c19375fce
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Date deposited: 04 May 2006
Last modified: 09 Jan 2022 02:51
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Contributors
Author:
M.H. Kargarnovin
Author:
D. Younesian
Author:
C.J.C. Jones
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