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|Title:||Noise emissions of transit trains at curvature due to track lubrication|
|Keywords:||Lubricated track;Normal track;Wheel/rail interface|
|Abstract:||The flanging and squealing noise generated by transit metro trains while crossing a curvature path has been studied. The noise emission at curvature is analyzed in case of non lubricated and lubricated track for wayside and interior of the train. The gauge face lubrication does not have a significant effect on the A-weighted noise generated by the train transit system while passing through a curved track. The negation of lubrication effect in controlling the overall A-weighted noise emission is attributed to an additional reaction force component, which accentuates the wheel/rail interaction comparatively more than the reduced high frequency squeal and flanging noise for the lubricated track. This additional force component is generated due to longitudinal and spin creepage on the flange while encountering a curved track and is observed to cause an increase in noise emission in the frequency range 250-400 Hz, where the rail/wheel interaction is dominant; in both way side as well as interior noise levels.|
|ISSN:||0975-1041 (Online); 0019-5596 (Print)|
|Appears in Collections:||IJPAP Vol.48(12) [December 2010]|
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