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 |
| Item ID: | 28423 |
| Date Deposited: | 28 Apr 2006 |
| Last Modified: | 01 Jun 2011 02:07 |
| Contributors: | Ford, R.A.J. (Author) Thompson, D.J. (Author) |
| Date: | 2006 |
| Status: | Published |
| Contact Email Address: | r.ford@unsw.edu.au |
| URI: | http://eprints.soton.ac.uk/id/eprint/28423 |
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