Simplified contact filters in wheel/rail noise prediction


Ford, R.A.J. and Thompson, D.J. (2006) Simplified contact filters in wheel/rail noise prediction. Journal of Sound and Vibration, 293, (3-5), 807-818. (doi:10.1016/j.jsv.2005.08.049).

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Description/Abstract

When predicting rolling noise due to wheel and rail roughness a “contact filter” is generally applied to account for the effect of the finite size of the wheel/rail contact. For time-domain analysis these calculations must be fast enough to get results in a reasonable time. Remington and Webb have devised a versatile three-dimensional ‘distributed point reacting spring’ (DPRS) contact model that is relatively quick, but if only one line of data is available along the contact it is unnecessarily complex, so a simpler two-dimensional version has been developed here. When this new model was checked against a Boussinesq analysis of the contact, the results in one-third octave bands were found to agree to within 3 dB. These results further suggest that the two-dimensional DPRS model might have an unexpectedly wide range of applicability, including large amplitude sinusoidal roughness and discrete features such as a rail joint. When implemented at each step in a time-domain wheel/rail interaction analysis, this model gave similar results to quasi-static roughness filtering with a constant load for moderate roughness, but dynamic effects became significant when the roughness amplitudes were large, particularly with dipped rail joints.

Item Type: Article
ISSNs: 0022-460X (print)
Related URLs:
Subjects: T Technology > TF Railroad engineering and operation
Divisions: University Structure - Pre August 2011 > Institute of Sound and Vibration Research > Dynamics
ePrint ID: 28423
Date Deposited: 28 Apr 2006
Last Modified: 27 Mar 2014 18:17
Contact Email Address: r.ford@unsw.edu.au
URI: http://eprints.soton.ac.uk/id/eprint/28423

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