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Y. Ma, V.L. Markine, A.A. Mashal, "Numerical Analysis of Rail Surface Crack Propagation under Cyclic Rolling-Sliding Contact Loads", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 179, 2016. doi:10.4203/ccp.110.179

Keywords: wheel-rail contact, crack sub-model, fracture parameter.

Summary

In this paper, a numerical procedure for surface crack propagation analysis is proposed. The complex stress-strain state for wheel-rail (W/R) contact is analysed by means of the sub-modelling approach together with the transient dynamic W/R rolling contact simulation. For that purpose, a three-dimensional semi-elliptical surface crack model is developed and utilized to analyse the stress/strain field around the crack tip. The validity of this procedure has been successfully confirmed using a comparison of simulation results and cutting boundary verification. The fracture parameters that are commonly used to characterize the crack propagation tendency are calculated with the domain integral approach. The influence of the crack geometry on the variation of the fracture parameters is assessed. Based on the results obtained, it was concluded that the proposed procedure is effective and efficient enough to perform the crack propagation analysis.

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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: 110 PROCEEDINGS OF THE THIRD INTERNATIONAL CONFERENCE ON RAILWAY TECHNOLOGY: RESEARCH, DEVELOPMENT AND MAINTENANCE Edited by: J. Pombo Paper 179 Numerical Analysis of Rail Surface Crack Propagation under Cyclic Rolling-Sliding Contact Loads Y. Ma, V.L. Markine and A.A. Mashal Section of Railway Engineering, Faculty of Civil Engineering and Geosciences, Delft University of Technology, The Netherlands doi:10.4203/ccp.110.179 purchase the full-text of this paper Full Bibliographic Reference for this paper Y. Ma, V.L. Markine, A.A. Mashal, "Numerical Analysis of Rail Surface Crack Propagation under Cyclic Rolling-Sliding Contact Loads", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 179, 2016. doi:10.4203/ccp.110.179 Keywords: wheel-rail contact, crack sub-model, fracture parameter. Summary In this paper, a numerical procedure for surface crack propagation analysis is proposed. The complex stress-strain state for wheel-rail (W/R) contact is analysed by means of the sub-modelling approach together with the transient dynamic W/R rolling contact simulation. For that purpose, a three-dimensional semi-elliptical surface crack model is developed and utilized to analyse the stress/strain field around the crack tip. The validity of this procedure has been successfully confirmed using a comparison of simulation results and cutting boundary verification. The fracture parameters that are commonly used to characterize the crack propagation tendency are calculated with the domain integral approach. The influence of the crack geometry on the variation of the fracture parameters is assessed. Based on the results obtained, it was concluded that the proposed procedure is effective and efficient enough to perform the crack propagation analysis. purchase the full-text of this paper (price £22) 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 £85 +P&P)
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