Development of a model for predicting worn profile of rail considering lateral slip

(Part2: Modeling and numerical analysis)

Abstract

Wheel / rail wear affects on running safety, ride comfort, and maintenance. The studies on the clarification of the mechanism of wear development are required. The observation of wear development in practical railway systems requires a great deal of time and cost. To predict the wear profile of wheel and rail, numerical procedure with Multi-body Dynamics Software is proposed in this paper. The wear of rail occurs more outstandingly in the curved section than in the straight section. In the curved section, the wheel passes with an attack angle, which gives rise to not only longitudinal slips but also lateral ones at the wheel/rail contact patch. Both longitudinal and lateral slips effects on the development of wear. So, in this study, to research each influence for wear development by longitudinal slips and lateral slips, we constructed wear predict model in numerical approach and compared between the numerical and the experimental results.