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Civil-Comp Proceedings
ISSN 1759-3433
CCP: 105
PROCEEDINGS OF THE NINTH INTERNATIONAL CONFERENCE ON ENGINEERING COMPUTATIONAL TECHNOLOGY
Edited by:
Paper 22

Finite Element Investigation of the Load Influence on Shear Crack Direction and Growth in Wheel-Rail Contact

M. Krácalík1, W. Daves1,2 and S. Scheriau3

1Material Center Leoben Forschung GmbH, Austria
2Institute of Mechanics, Montanuniversität Leoben, Austria
3Voestalpine Schienen GmbH, Leoben, Austria

Full Bibliographic Reference for this paper
, "Finite Element Investigation of the Load Influence on Shear Crack Direction and Growth in Wheel-Rail Contact", in , (Editors), "Proceedings of the Ninth International Conference on Engineering Computational Technology", Civil-Comp Press, Stirlingshire, UK, Paper 22, 2014. doi:10.4203/ccp.105.22
Keywords: rail, shear crack, configuration force, finite element, rolling-sliding, cyclic loading.

Summary
The aim of the work, described in this paper, is the investigation of the load influence, described by axle load, tangential load and creep on a surface shear crack. An already existing inclined surface crack is investigated using a two-dimensional finite element model. The crack driving force vector of such a crack is calculated. During a rolling cycle several maxima of the crack driving force are observed and a concept has to be developed, to account for the effect, that each crack tip loading and thus each peak will influence the crack growth rate and crack growth direction. For a quantitative description the model has to be regarded as an elastic-plastic material under large-scale or general yielding conditions. In this paper the configurational force concept is used to determine the crack driving force.

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