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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
, "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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