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L. Xin, V.L. Markine, I.Y. Shevtsov, "Simulation of Railway Crossing Damage Due to Welding Defect", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 213, 2014. doi:10.4203/ccp.104.213

Keywords: railway crossing, weld defect, explicit FE model, wheel-rail contact, material model.

Summary

In this paper a local dynamic finite element model is developed to study the crossing nose damages caused by weld defects. During the welding process, a martensitic layer is generated if the material is not heated enough or is cooled down too fast. Cracks are found at the interface of the weld material and the martensitic layer, which will shorten the crossing nose's service life. Several observations and measurements are conducted in the railway network in the Netherlands. This data is used as material properties to simulate different material layers in the model. Contact positions and stress distributions from the impact model are also used as the input for damage investigation. Material responses such as stress and plastic strain distribution can be obtained from the simulation, by which the possible crack initiation location can be detected.

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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 213 Simulation of Railway Crossing Damage Due to Welding Defect L. Xin¹, V.L. Markine¹ and I.Y. Shevtsov² ¹Delft University of Technology, Delft, the Netherlands ²Prorail, Utrecht, the Netherlands doi:10.4203/ccp.104.213 purchase the full-text of this paper Full Bibliographic Reference for this paper L. Xin, V.L. Markine, I.Y. Shevtsov, "Simulation of Railway Crossing Damage Due to Welding Defect", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 213, 2014. doi:10.4203/ccp.104.213 Keywords: railway crossing, weld defect, explicit FE model, wheel-rail contact, material model. Summary In this paper a local dynamic finite element model is developed to study the crossing nose damages caused by weld defects. During the welding process, a martensitic layer is generated if the material is not heated enough or is cooled down too fast. Cracks are found at the interface of the weld material and the martensitic layer, which will shorten the crossing nose's service life. Several observations and measurements are conducted in the railway network in the Netherlands. This data is used as material properties to simulate different material layers in the model. Contact positions and stress distributions from the impact model are also used as the input for damage investigation. Material responses such as stress and plastic strain distribution can be obtained from the simulation, by which the possible crack initiation location can be detected. 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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