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A.M. Panunzio^1,2, G. Puel¹, R. Cottereau¹, S. Simon² and X. Quost²

¹Laboratoire MSSMat, CNRS UMR 8579, CentraleSupélec, Université Paris-Saclay, France
²Régie Autonome des Transports Parisiens, Paris, France

doi:10.4203/ccp.110.232

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A.M. Panunzio, G. Puel, R. Cottereau, S. Simon, X. Quost, "Wheel-Rail Contact Parameters Sensitivity Analysis with Stochastic Track Geometry", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 232, 2016. doi:10.4203/ccp.110.232

Keywords: track geometry irregularities, rail-wheel contact, sensitivity analysis.

Summary

The dynamical response of a train on a track with geometry irregularities depends on several parameters. Most of them cannot be accurately identified and have to be considered as uncertain and the wheel-rail contact parameters cannot be completely characterized using deterministic models. In this paper a stochastic characterization of the track geometry is built using measurements data. The tracks thus generated are introduced as the input of a railway dynamics software (SIMPACK) to characterize the stochastic contact patch and the parameters on which it depends: contact forces and wheelset-rail relative position. A variance-based global sensitivity analysis is performed on these quantities, with respect to the stochastic geometry irregularities in a curved track. The aim is to identify which kinds of irregularities have a more important impact on the contact patch variations.

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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 232 Wheel-Rail Contact Parameters Sensitivity Analysis with Stochastic Track Geometry A.M. Panunzio^1,2, G. Puel¹, R. Cottereau¹, S. Simon² and X. Quost² ¹Laboratoire MSSMat, CNRS UMR 8579, CentraleSupélec, Université Paris-Saclay, France ²Régie Autonome des Transports Parisiens, Paris, France doi:10.4203/ccp.110.232 purchase the full-text of this paper Full Bibliographic Reference for this paper A.M. Panunzio, G. Puel, R. Cottereau, S. Simon, X. Quost, "Wheel-Rail Contact Parameters Sensitivity Analysis with Stochastic Track Geometry", in J. Pombo, (Editor), "Proceedings of the Third International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 232, 2016. doi:10.4203/ccp.110.232 Keywords: track geometry irregularities, rail-wheel contact, sensitivity analysis. Summary The dynamical response of a train on a track with geometry irregularities depends on several parameters. Most of them cannot be accurately identified and have to be considered as uncertain and the wheel-rail contact parameters cannot be completely characterized using deterministic models. In this paper a stochastic characterization of the track geometry is built using measurements data. The tracks thus generated are introduced as the input of a railway dynamics software (SIMPACK) to characterize the stochastic contact patch and the parameters on which it depends: contact forces and wheelset-rail relative position. A variance-based global sensitivity analysis is performed on these quantities, with respect to the stochastic geometry irregularities in a curved track. The aim is to identify which kinds of irregularities have a more important impact on the contact patch variations. 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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