Evaluation of Railway Vehicle Derailment when Passing Switch and Crossing


Hiroaki ISHIDA, Kenji UEKI, Hiroshi FUJIMOTO, Masayuki MIYAMOTO
A field test passing the switch and crossing was done with test vehicles changing the running speed and the wheel load balance. The wheel vertical displacement from rail, the wheel/rail contact forces in three directions and so on were measured as the continuous values. We investigated the behavior of the wheelset and the relation between some kinds of parameters and the wheel rise. This paper deals with the results of this experiment and analysis in search of adeqate evaluation methods of vehicle running safety. The wheel load balance and the frictional coefficient between wheel and rail influence the vehicle derailment. From the results of computer simulation, it was found that the masses of both carbody and wheelsets also affect the derailment.