Vertical Dynamics Analysis on Evaluation Standard of Ballastless Track Damping Effect

Abstract:

Vibration and noise reduction was the trend of ballastless track, however, evaluation of different types of damping effect of the track was not easy to achieve. The orbit of the traditional vertical displacement of the components, to evaluate the damping effect of the acceleration was not accurate when the difference between the track structure larger. From the principle of energy conservation, the flexibility to select a long pillow, long pillow vertical, orbital plate of three ballastless track fragments, respectively, without the establishment of a vehicle - track couplin model, the vertical acceleration, the vertical track of the various components of displacement, acceleration, maximum kinetic energy was calculated out when train speed was 250km/h by numerical simulation methods. By analyzing the relationship between their body vertical acceleration and found that the largest track the existence of kinetic energy correlation between the changes in, made with the greatest kinetic energy damping effect as the track of one of the evaluation criteria, and it was easy to implement.

• Periodical: Applied Mechanics and Materials (Volumes 361-363)
• Pages: 1703-1708
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.361-363.1703
• Online since: August 2013
• Authors: Zeng Wu, Jie Qing Li, Zhong Tao
• Keywords: Coupling, Damping Effect, Evaluation Standard, Kinetic Energy, Vertical Acceleration, Vertical Displacement

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