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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 257

A New Wear Model for the Analysis of Wheel and Rail Profile Evolution on Complex Railway Networks

A. Innocenti, L. Marini, E. Meli, G. Pallini and A. Rindi

Department of Industrial Engineering, University of Florence, Firenze, Italy

Full Bibliographic Reference for this paper
A. Innocenti, L. Marini, E. Meli, G. Pallini, A. Rindi, "A New Wear Model for the Analysis of Wheel and Rail Profile Evolution on Complex Railway Networks", in J. Pombo, (Editor), "Proceedings of the Second International Conference on Railway Technology: Research, Development and Maintenance", Civil-Comp Press, Stirlingshire, UK, Paper 257, 2014. doi:10.4203/ccp.104.257
Keywords: wear, wheel and rail profiles, wheel-rail contact, multibody modelling, railway vehicles.

Summary
In railway applications, the wear estimation at the wheel-rail contact is an important field of study, mainly correlated to the planning of maintenance interventions, vehicle stability and the possibility to carry out specific strategies for the wheel profile optimization. In this paper a model for the evaluation of the wheel and rail profile evolution due to wear specially developed for complex railway networks is presented. The model layout is made up of two mutually interactive but separate units: a vehicle model for the dynamical analysis and a model for the wear evaluation. To study complex railway lines a new statistical approach for the railway track description in order to achieve general significant accuracy results in a reasonable time is proposed. The wear model has been validated in collaboration with Trenitalia S.P.A and Rete Ferroviaria Italiana (RFI), which have provided the technical documentation and the experimental data relating to some tests performed on scenery that exhibits serious problems in terms of wear: the vehicle DMU ALn 501 Minuetto circulating on the Aosta-Pre Saint Didier Italian line.

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