Abstract
In order to prevent the derailed vehicle from deviating from the track in the case of earthquakes, authors have developed a post derailment stopper attached to a bogie frame. For the development of the stopper, we conducted running tests under derailment conditions using real bogies and tracks. In addition, we have developed the vehicle dynamics model with the stopper based on the results of running tests. In this paper, we introduce the model for derailed vehicle and analyze the motion of the bogie frame and the stopper.
