Experimental investigation of wheel/rail rolling contact at railhead edge

Bandula-Heva, T. M., Dhanasekar, Manicka, & Boyd, P. (2012) Experimental investigation of wheel/rail rolling contact at railhead edge. Experimental Mechanics, December, pp. 1-15.

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Abstract

Wheel-rail rolling contact at railhead edge, such as a gap in an insulated rail joint, is a complex problem; there are only limited analytical, numerical and experimental studies available on this problem in the academic literature. This paper describes experimental and numerical investigations of railhead strains in the vicinity of the edge under the contact of a loaded wheel. A full-scale test rig was developed to cyclically apply wheel/rail rolling contact load to the edge zone of the railhead. An image analysis technique was employed to determine the railhead vertical, lateral and shear strain components. The vertical strains determined using the image analysis method have been validated with the strain gauge measurements and used for the calibration of a 3D nonlinear Finite Element Model (FEM) that simulates the wheel/rail contact at the railhead edge and use suitable boundary conditions commensurate to the experimental setup. The FEM was then used to determine other states of strains.

Impact and interest:

11 citations in Scopus
10 citations in Web of Science®
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ID Code: 56152
Item Type: Journal Article
Refereed: Yes
Keywords: Rail Edge Effects Non-contact strain measurement, Wheel/rail Contact, Insulated Rail Joints, Ratchetting, Non-contact Strain Measurement
DOI: 10.1007/s11340-012-9701-6
ISSN: 1741-2765
Divisions: Current > Schools > School of Civil Engineering & Built Environment
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Copyright Owner: Copyright 2012 Springer
Deposited On: 08 Jan 2013 00:30
Last Modified: 31 Mar 2015 06:56

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