Sub-modelling for the ratchetting failure of insulated rail joints

Mandal, Nirmal Kumar & Dhanasekar, Manicka (2013) Sub-modelling for the ratchetting failure of insulated rail joints. International Journal of Mechanical Sciences, 75, pp. 110-122.

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Abstract

Insulated rail joints are critical for train safety as they control electrical signalling systems; unfortunately they exhibit excessive ratchetting of the railhead near the endpost insulators. This paper reports a three-dimensional global model of these joints under wheel–rail contact pressure loading and a sub-model examining the ratchetting failures of the railhead. The sub-model employs a non-linear isotropic–kinematic elastic–plastic material model and predicts stress/strain levels in the localised railhead zone adjacent to the endpost which is placed in the air gap between the two rail ends at the insulated rail joint. The equivalent plastic strain plot is utilised to capture the progressive railhead damage adequately. Associated field and laboratory testing results of damage to the railhead material suggest that the simulation results are reasonable.

Impact and interest:

17 citations in Scopus
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12 citations in Web of Science®

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68 since deposited on 31 Mar 2014
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ID Code: 69097
Item Type: Journal Article
Refereed: Yes
Keywords: Railhead, Ratchetting, Sub-modelling, Finite element analysis, von-Mises yield criterion
DOI: 10.1016/j.ijmecsci.2013.06.003
ISSN: 0020-7403
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2013 Elsevier
Copyright Statement: This is the author’s version of a work that was accepted for publication in International Journal of Mechanical Sciences. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in International Journal of Mechanical Sciences, [VOL 75, (2013)] DOI: 10.1016/j.ijmecsci.2013.06.003
Deposited On: 31 Mar 2014 03:36
Last Modified: 03 Nov 2015 19:43

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