Evaluation of Stability in Railway Vehicles on Basis of Bogie Lateral Acceleration

Abstract:

The paper focuses on evaluating the stability of the railway vehicle during running on a track horizontal irregularities and investigating the possibilities to improve the dynamic behavior on a lateral direction. The evaluation method for the stability relies on the homologation specifications of the railway vehicles from the perspective of the dynamic behavior included in the UIC 518 Leaflet, where the lateral accelerations of the bogies represent evaluation units for the stability. The lateral accelerations are derived from numerical simulations, developed on a non-linear complex model of the vehicle/track system, where the vehicle is described by a mechanical system with 21 degrees of freedom. The results thus presented outline the possibilities of improving the vehicle stability by adopting the best values of the lateral damping of the secondary suspension or of the lateral stiffness of the primary suspension that will lead to the minimizing of the lateral acceleration in a bogie.

• Periodical: Applied Mechanics and Materials (Volumes 809-810)
• Pages: 1031-1036
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.809-810.1031
• Online since: November 2015
• Authors: Madalina Dumitriu*, Camil Crăciun
• Keywords: Bogie Acceleration, Hunting, Railway Vehicle, Stability, Suspension Parameters

References

[1] Y. He, J. Mc Phee, Optimization of the lateral stability of rail vehicles, Vehicle System Dynamics. 38, 5 (2002) 361–390.

DOI: 10.1076/vesd.38.5.361.8278

[2] C.E. Bell, D. Horak, J.K. Hedrick, Stability and curving mechanics of rail vehicles, Transaction of the ASME Journal of Dynamic, Systems, Measurement and Control. 103 (1981) 181–190.

DOI: 10.1115/1.3140628

[3] M. Dumitriu, Influence of the suspension parameters upon the hunting movement stability of the railway vehicles, Mechanical Journal Fiability and Durability. 1 (2014) 129 – 136.

[4] Y.C. Cheng, S.Y. Leeb, H.H. Chen, Modeling and nonlinear hunting stability analysis of high-speed railway vehicle moving on curved track, J. Sound and Vibration. 324 (2009) 139-160.

DOI: 10.1016/j.jsv.2009.01.053

[5] O. Polach, On non-linear methods of bogie stability assessment using computer simulations, Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit. 220 (2006) 13-27.

DOI: 10.1243/095440905x33251

[6] T. Mazilu, M. Dumitriu, On the instability of the railway vehicles, Mechanical Journal Fiability and Durability. 2, 8 (2011) 1-6.

[7] L. Mazzola, S. Alfi, S. Bruni, A method to optimize stability and wheel wear in railway bogies, IJR International Journal of Railway. 3, 3 (2010) 95-105.

[8] UIC 518 Leaflet, Testing and approval of railway vehicles from the point of view of their dynamic behaviour – Safety – Track fatigue – Running behaviour, 4th edition, (2009).