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W. Daves^1,2, M. Kracalik¹, W.P. Yao¹ and S. Scheriau³

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

doi:10.4203/ccp.104.110

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W. Daves, M. Kracalik, W.P. Yao, S. Scheriau, "Mechanisms of Driving Surface Shear Cracks in Rolling Sliding Contact", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 110, 2014. doi:10.4203/ccp.104.110

Keywords: rail, crack, configurational force, finite element, rolling sliding.

Summary

An enhanced finite element model for surface shear cracks under rolling sliding contact is developed. Proper modelling of such cracks requires the use of the newly developed configurational force concept for the calculation of crack driving forces. This method is capable in describing incremental plasticity in the surrounding of such a crack. The numerical applicability of the configurational force concept for shear cracks under cyclic contact loading is discussed and compared with the J-integral concept. A single inclined crack in a rail loaded by an accelerated wheel is investigated. As a result of the modelled contact between wheel and rail the stick-slip effect of a rolling sliding contact is considered. Special issues are addressed as transformation of results from the three-dimensional to the two-dimensional case and the interaction of the wheel with the crack-faces in the rail. During one cycle several peaks of the crack driving force are calculated and discussed.

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Front Page Browse CCP CSETS CTR IJRT Other Authors Search Purchase Guide FAQ Contact us	Civil-Comp Proceedings ISSN 1759-3433 CCP: 104 PROCEEDINGS OF THE SECOND INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 110 Mechanisms of Driving Surface Shear Cracks in Rolling Sliding Contact W. Daves^1,2, M. Kracalik¹, W.P. Yao¹ and S. Scheriau³ ¹Material Center Leoben Forschung GmbH, Austria ²Institute of Mechanics, Montanuniversität Leoben, Austria ³voestalpine Schienen GmbH, Leoben, Austria doi:10.4203/ccp.104.110 purchase the full-text of this paper Full Bibliographic Reference for this paper W. Daves, M. Kracalik, W.P. Yao, S. Scheriau, "Mechanisms of Driving Surface Shear Cracks in Rolling Sliding Contact", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 110, 2014. doi:10.4203/ccp.104.110 Keywords: rail, crack, configurational force, finite element, rolling sliding. Summary An enhanced finite element model for surface shear cracks under rolling sliding contact is developed. Proper modelling of such cracks requires the use of the newly developed configurational force concept for the calculation of crack driving forces. This method is capable in describing incremental plasticity in the surrounding of such a crack. The numerical applicability of the configurational force concept for shear cracks under cyclic contact loading is discussed and compared with the J-integral concept. A single inclined crack in a rail loaded by an accelerated wheel is investigated. As a result of the modelled contact between wheel and rail the stick-slip effect of a rolling sliding contact is considered. Special issues are addressed as transformation of results from the three-dimensional to the two-dimensional case and the interaction of the wheel with the crack-faces in the rail. During one cycle several peaks of the crack driving force are calculated and discussed. purchase the full-text of this paper (price £20) go to the previous paper go to the next paper return to the table of contents return to the book description purchase this book (price £65 +P&P)
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