Journal of Mechanical Science and Technology

, Volume 28, Issue 9, pp 3517–3527 | Cite as

Influence of train length on the lateral vibration of a high-speed train equipped with articulated bogies

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Abstract

The influences of train length on vehicle dynamics and train stability were investigated using different vehicle models of various lengths. First, a reliable vehicle model was constructed to determine the cause of unstable lateral vibration. This model reflects the tendencies observed in the high-speed test line investigations. Analysis results show that the secondary lateral stiffness of the air spring is the most significant cause of lateral vibration in car bodies. Vibrations were stable in the analysis of short train formations, which had either 7 or 10 cars, even though lateral stiffness was high. However, long train formations that contained either 16 or 20 cars vibrated unstably. Mode analysis results suggested that an increase in wheel conicity can reduce the unstable, low-frequency vibration of long trains.

Keywords

High-speed train Dynamic stability Train length Articulated bogie Wheel conicity Kinematic motion 
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Copyright information

© The Korean Society of Mechanical Engineers and Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  1. 1.Department of Railroad Vehicle System EngineeringWoosong UniversityDaejeonKorea

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