Host: The Japan Society of Mechanical Engineers
Name : [in Japanese]
Date : November 30, 2016 - December 02, 2016
It is important to predict the development of rail and wheel wear. However, the observation of wear development in practical railway systems requires a great deal of time and cost, so, that is not an efficient approach. To predict the wear profile of wheel and rail, numerical procedure with the aid of Multi-body dynamics software is proposed in this paper. We propose a model for the prediction of wear development by embedding the proposed model of wear development into Simpack. First, from the motion analysis using Simpack, the contact pressure, slip ratio and some necessary parameters are obtained. To create worn profile of rail and wheel, the wear depth is derived using the proposed model. The current profile is updated by worn profile, and set as the new profile in Simpack model. The wear depth is calculated based on Archerd wear theory. Calculation of wear development is performed in Wheel/Rail contact area, and nodes are replaced with the calculated wear depth. The present study investigate the validity of this worn profile prediction model. These results of model analysis are compared with the result of experiments which obtained previous study. Wear coefficient, depth and amount are discussed from the viewpoint of mechanical and tribological contact problems.
