2011
IMAACA 2011 Proceeding
Modeling of Wheel/Track Interaction with Wheel Defects and Diagnosis Methods: an Overview
Authors: Rasul Fesharakifard, Antoine Dequidt, Florent Brunel, Yannick Desplanques, Olivier Coste, Patrick Joyez
Abstract
The contact defects between wheel and rail which are originated from wheel profile irregularities and train overloading or unbalancing could deteriorate railway tracks. The interaction defects influence more drastically the maintenance of railways with high traffic like the ones of Eurotunnel tracks. Several works have been performed on different issues of dynamic interaction model between rail and wheel. Such a model can be used for analysis and numerical simulation for wheel profile geometry and train load characteristics. The aim of this paper is to review the major methods and models and classify them, so that different parts of the model are demonstrated wheel profile geometry, wheel/rail contact model, vehicle and track structure and substructure models, calculation methods and transient simulation models. To achieve the accurate prediction by the model, different methods of exploiting the experimental data to identify the load and diagnosis the interaction defects are also presented.
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