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Influences of car body vertical flexibility on ride quality of passenger railway vehicles

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journal contribution
posted on 17.11.2009, 14:39 by J. Zhou, Roger Goodall, L. Ren, H. Zhang
To study the influences of carbody vertical stiffness on vehicle ride quality, a vertical model of railway passenger vehicles, which includes the carbody flexible effects and all vertical rigid modes, is built. With the model and the covariance method, the requirements for the carbody bending frequency are researched. The results show that when the stiffness of a carbody decreases to certain frequencies there are significant vibrations in the carbody, although structural damping provided by a fully equipped carbody will help attenuate the vibration to some extent. A simple way to avoid resonant vibration is to increase the bending frequencies of a carbody: the higher the vehicle running speed, the higher carbody stiffness could be required. However, there are practical limitations to such an increase and the method used in this study can readily obtain the lowest bending frequency required by vehicle ride quality. Finally, the geometric filtering phenomenon and its influences on the carbody resonant flexural vibration are analysed. Results show that it is this phenomenon rather than the natural vibrations of bogie bounce that most strongly influences the resonant flexural vibration of a railway carbody.

History

School

  • Mechanical, Electrical and Manufacturing Engineering

Citation

ZHOU, J...et al. Influences of car body vertical flexibility on ride quality of passenger railway vehicles. Proceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 223(5), pp. 461-471

Publisher

© Professional Engineering Publishing / IMechE

Version

VoR (Version of Record)

Publication date

2009

Notes

This is an article from the journal, Proceedings of the IMechE, Part F: Journal of Rail and Rapid Transit [© Professional Engineering Publishing ]. It is also available at: http://dx.doi.org/10.1243/09544097JRRT272

ISSN

0954-4097;2041-3017

Language

en