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Modelling and Simulation in Engineering
Volume 2018, Article ID 8578272, 10 pages
Research Article

Simulation of Train-Turnout Coupled Dynamics Using a Multibody Simulation Software

Department of Civil and Environmental Engineering, Norwegian University of Science and Technology, Trondheim, Norway

Correspondence should be addressed to Albert Lau; on.untn@ual.trebla

Received 7 December 2017; Revised 18 May 2018; Accepted 24 June 2018; Published 22 July 2018

Academic Editor: Gaetano Sequenzia

Copyright © 2018 Albert Lau and Inge Hoff. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


With the advancements of computing power, multibody simulation (MBS) tool is used to study not only train dynamics but also more realistic phenomena such as train-track coupled dynamics. However, train-turnout coupled dynamics within MBS is still hard to be found. In this paper, a train-turnout coupled model methodology using a MBS tool GENSYS is presented. Dynamic track properties of a railway track are identified through numerical receptance test on a simple straight track model. After that, the identified dynamic track properties are adopted in a switch and crossing (turnout) to simulate train-turnout coupled dynamic interaction including parameters such as rail bending stiffness and sleeper mass variation along the turnout. The train-turnout coupled dynamic interaction is compared to the dynamic interaction simulated from a widely accepted moving mass train-turnout model. It is observed that the vertical and lateral normal forces for the new train-turnout coupled model and the conventional moving mass train-turnout model are in good agreement. In addition, the new train-turnout coupled model can provide additional track dynamics results. It is concluded that the train-turnout coupled model can provide a more realistic train-turnout dynamic interaction compared to the moving mass train-turnout model.