A method to predict the derailment of rolling stock due to collision using a theoretical wheelset derailment model

摘要

A wheelset derailment model on rolling stock was developed to predict train collision-induced derailment. This model is based on the theoretical derailment behaviors of a wheelset under suspension loads. This theoretical derailment model was numerically simulated using commercial dynamics software, wherein it is demonstrated that this model is useful for predicting train collision-induced derailment. Furthermore, this theoretical derailment model was incorporated into a virtual testing model that did not consider wheel-rail contact conditions in order to evaluate useful applications to the derailment prediction of a train collision. The derailment behaviors of this virtual testing model, which were predicted by applying the theoretical derailment model under the condition of no wheel-rail contact, were closely correlated to those derived from simulations that considered surface-to-surface contact conditions.