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Nonlinear three-dimensional wagon–track model for the investigation of rail corrugation initiation on curved track

journal contribution
posted on 06.12.2017, 00:00 by Yan Sun, Scott Simson
A nonlinear wagon–track model on curved track has been developed to characterize rail corrugation formation due to self-excitation of the wheel–rail stick–slip process. In this model, wagon movements were described using up to 78 degrees of freedom (DOFs) to model a three piece freight bogie. Innovatively, the wheelset movements are described using nine DOFs, including torsional and bending modes about the longitudinal and vertical directions. The track modelling is considered as a one-layer structure (two rail beams on discrete spring and damper elements). The wheel sliding after creepage saturation is considered in the wheel–rail interface modelling. Simulation of a case study shows that the frequencies of the wheel stick–slip process are composed of the basic frequency, which might come from the combined effect of sleeper-passing frequency and one third of the combined torsional and bending frequency of the wheelset, and the double and triple basic frequencies, which form the wavelengths of rail corrugation at different situations.

Funding

Category 1 - Australian Competitive Grants (this includes ARC, NHMRC)

History

Volume

45

Issue

2

Start Page

113

End Page

132

Number of Pages

20

ISSN

0042-3114

Location

London

Publisher

Taylor & Francis

Language

en-aus

Peer Reviewed

Yes

Open Access

No

External Author Affiliations

Centre for Railway Engineering;

Era Eligible

Yes

Journal

Vehicle system dynamics : international journal of vehicle mechanics and mobility.

Exports