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M. Sh. Sichani¹, R. Enblom^1,2 and M. Berg¹

¹Department of Aeronautical and Vehicle Engineering, KTH Royal Institute of Technology, Rail Vehicles, Stockholm, Sweden
²Bombardier Transportation, Mainline and Metros Division, Västerås, Sweden

doi:10.4203/ccp.104.266

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M. Sh. Sichani, R. Enblom, M. Berg, "A Fast Non-Elliptic Contact Model for Application to Rail Vehicle Dynamics Simulation", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 266, 2014. doi:10.4203/ccp.104.266

Keywords: non-elliptic rolling contact, wheel-rail contact, ANALYN, virtual penetration, rail vehicle dynamics, wear.

Summary

An approximate rolling contact model is introduced for fast evaluation of the contact patch and stress distribution in the wheel-rail interface, capable of being used on-line with dynamics simulations. The normal part of the model is based on a novel approach in which the surface deformations are approximated, resulting in accurate patch and pressure estimation. The tangential part is based on an adaptation of the FASTSIM algorithm to non-elliptic patches. The new model is compared to the approximate model of Kik and Piotrowski and the results are evaluated using the rigorous solution of Kalker's CONTACT code. The comparison clearly shows the new model to be more accurate than Kik-Piotrowski's in terms of contact patch and stress distribution as well as creep force estimation.

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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 266 A Fast Non-Elliptic Contact Model for Application to Rail Vehicle Dynamics Simulation M. Sh. Sichani¹, R. Enblom^1,2 and M. Berg¹ ¹Department of Aeronautical and Vehicle Engineering, KTH Royal Institute of Technology, Rail Vehicles, Stockholm, Sweden ²Bombardier Transportation, Mainline and Metros Division, Västerås, Sweden doi:10.4203/ccp.104.266 purchase the full-text of this paper Full Bibliographic Reference for this paper M. Sh. Sichani, R. Enblom, M. Berg, "A Fast Non-Elliptic Contact Model for Application to Rail Vehicle Dynamics Simulation", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 266, 2014. doi:10.4203/ccp.104.266 Keywords: non-elliptic rolling contact, wheel-rail contact, ANALYN, virtual penetration, rail vehicle dynamics, wear. Summary An approximate rolling contact model is introduced for fast evaluation of the contact patch and stress distribution in the wheel-rail interface, capable of being used on-line with dynamics simulations. The normal part of the model is based on a novel approach in which the surface deformations are approximated, resulting in accurate patch and pressure estimation. The tangential part is based on an adaptation of the FASTSIM algorithm to non-elliptic patches. The new model is compared to the approximate model of Kik and Piotrowski and the results are evaluated using the rigorous solution of Kalker's CONTACT code. The comparison clearly shows the new model to be more accurate than Kik-Piotrowski's in terms of contact patch and stress distribution as well as creep force estimation. 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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