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Integrating Dynamics and Wear Modelling to Predict Railway Wheel Profile Evolution

By R. Lewis, F. Braghin, A. Ward, S. Bruni, R.S. Dwyer-Joyce, K. Bel Knani and P. Bologna


The aim of the work described was to predict wheel\ud profile evolution by integrating multi-body dynamics\ud simulations of a wheelset with a wear model.\ud \ud The wear modelling approach is based on a wear\ud index commonly used in rail wear predictions. This\ud assumes wear is proportional to Tγ, where T is tractive\ud force and γ is slip at the wheel/rail interface. Twin disc\ud testing of rail and wheel materials was carried out to\ud generate wear coefficients for use in the model.\ud \ud \ud The modelling code is interfaced with\ud ADAMS/Rail, which produces multi-body dynamics\ud simulations of a railway wheelset and contact conditions\ud at the wheel/rail interface. Simplified theory of rolling\ud contact is used to discretise the contact patches\ud produced by ADAMS/Rail and calculate traction and\ud slip within each.\ud \ud \ud The wear model combines the simplified theory of\ud rolling contact, ADAMS/Rail output and the wear\ud coefficients to predict the wear and hence the change of\ud wheel profile for given track layouts

Publisher: CHARMEC
Year: 2003
OAI identifier:

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