Computational Technology Resources - CCP

J. Wiedorn¹, W. Daves¹, H. Ossberger² and M. Pletz³

¹Materials Center Leoben Forschung GmbH, Leoben, Austria
²VAE GmbH, Zeltweg, Austria
³Department of Polymer Engineering and Science, Montanuniversitaet Leoben, Austria

doi:10.4203/ccp.110.116

purchase the full-text of this paper

J. Wiedorn, W. Daves, H. Ossberger, M. Pletz, "A Simplified Dynamic Finite Element Model for the Impact of a Wheel on a Crossing: Validation and Parameter Study", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 116, 2016. doi:10.4203/ccp.110.116

Keywords: contact, crossing, dynamics, explicit, finite element analysis, forces, impact, simplified model.

Summary

In this paper, an explicit finite element model is introduced that describes the vertical impact of a wheel on a crossing nose. The wheel runs along a simplified crossing geometry which consists of a continuous rail with a flat and an inclined section where the impact occurs. The inclination (impact angle) can be extracted from the real wheel and crossing geometry. The simplified model is validated with results from a model with realistic crossing geometry. The simplified model lacks the ability to describe the dynamics before the main impact on the crossing nose occurs. However, the results are suitable for the intended purpose. With the simplified model, the influence of parameters such as impact angle, crossing radius and train velocity on the impact forces occurring are studied. A nearly linear increase in the impact force with increasing impact angles was calculated. For smaller crossing head radii, the impact forces clearly decrease, but occurring contact pressures and plastic strains increase.

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)

	Computational & Technology Resources an online resource for computational, engineering & technology publications
	not logged in - login
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 116 A Simplified Dynamic Finite Element Model for the Impact of a Wheel on a Crossing: Validation and Parameter Study J. Wiedorn¹, W. Daves¹, H. Ossberger² and M. Pletz³ ¹Materials Center Leoben Forschung GmbH, Leoben, Austria ²VAE GmbH, Zeltweg, Austria ³Department of Polymer Engineering and Science, Montanuniversitaet Leoben, Austria doi:10.4203/ccp.110.116 purchase the full-text of this paper Full Bibliographic Reference for this paper J. Wiedorn, W. Daves, H. Ossberger, M. Pletz, "A Simplified Dynamic Finite Element Model for the Impact of a Wheel on a Crossing: Validation and Parameter Study", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 116, 2016. doi:10.4203/ccp.110.116 Keywords: contact, crossing, dynamics, explicit, finite element analysis, forces, impact, simplified model. Summary In this paper, an explicit finite element model is introduced that describes the vertical impact of a wheel on a crossing nose. The wheel runs along a simplified crossing geometry which consists of a continuous rail with a flat and an inclined section where the impact occurs. The inclination (impact angle) can be extracted from the real wheel and crossing geometry. The simplified model is validated with results from a model with realistic crossing geometry. The simplified model lacks the ability to describe the dynamics before the main impact on the crossing nose occurs. However, the results are suitable for the intended purpose. With the simplified model, the influence of parameters such as impact angle, crossing radius and train velocity on the impact forces occurring are studied. A nearly linear increase in the impact force with increasing impact angles was calculated. For smaller crossing head radii, the impact forces clearly decrease, but occurring contact pressures and plastic strains increase. 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)
Back to top	©Civil-Comp Limited 2023 - terms & conditions