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Wheel-rail Noise Generation, Part II: Wheel Vibration

✍ Scribed by D.J. Thompson

Publisher: Elsevier Science
Year: 1993
Tongue: English
Weight: 552 KB
Volume: 161
Category: Article
ISSN: 0022-460X
DOI: 10.1006/jsvi.1993.1083

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✦ Synopsis

The vibrations of railway wheels are one of the component sources of wheel-rail noise generation. The nature of these vibrations is discussed, in the context of both theoretical and experimental results. This begins with a study of the free vibration behaviour, in which the modes of vibration are categorized, and the natural frequencies and mode shapes of several typical designs of wheel in use on British Rail are compared. Theoretical modelling is based on the finite element method. The forced response (frequency response functions) has been predicted by using a modal expansion. Although most parameters required for this expansion, particularly the mode shape parameters, are derived from the finite element results, the damping has to be derived from measurements. Predicted results show good agreement with measurements, particularly for the lateral receptance. The lateral-vertical cross-receptance is predicted somewhat less reliably.

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