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

J.S. Koo, H.J. Cho, Multibody System Dynamics, April 2012, Volume 27, Issue 4, pp 403-422.

Abstract

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.

How Multibody Dynamics Simulation Technology is Used

RecurDyn simulations provide verification for a theoretical wheel derailment model. The RecurDyn model agreed well with the theoretical model in predicting wheel derailment. RecurDyn can reduce the amount of time spent on testing by providing a good virtual prototype that can be used to test design decisions.