Evaluation of the Admissible Longitudinal Compressive Forces by Means of Multibody Train Simulations

This paper presents the results of a coupled longitudinal-lateral model for train dynamics. A previously developed vehicle model has been incorporated into the TrainDy software for longitudinal train dynamics. This complex dynamic model of the whole train has been employed to perform pushing tests and emergency braking on freight train. The reported results show that the admissible longitudinal compressive forces (LCF) are affected by the derailment criterion employed and that the pushing tests are much more severe, with respect to safety, than the emergency braking, which is a more common train operation.