Wheel/rail noise can be reduced by increasing the size of the area of contact between the wheel and rail and by decreasing the contact stiffness. In this study we examine analytically the anticipated changes in these quantities if the transverse curvature of the wheel and rail running surfaces are varied over realistic limits. In general, it is not possile to vary significantly the contact stiffness or the dimensions of the contact area in the rolling direction solely through variations in the wheel running surface is concave with a transverse curvature. The dimensions of the contact area in the direction transverse to the rolling direction can, however, be increased significantly if the wheel running surface is concave with a transverse radius of curvature only slightly larger than the radius of curvature of the rail. Analytical studies using measured wheel and rail roughness have shown that the increase of the dimension of the contact area in the direction transverse to rolling can lead to 5-10 dB reduction in the interaction force between the wheel and the rail.
Wheel/rail noise reduction through profile modification
Rad/Schiene-Lärmreduzierung durch Profilmodifizierung
1996
14 Seiten, 15 Bilder, 3 Tabellen, 6 Quellen
Conference paper
English
Wheel-rail noise reduction through profile modification
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