Research on the Application Scheme for the New Type Noise Reducing and Damping Wheels for Metro Vehicles

The technical analysis is made on selection of noise reduction measures for metro wheels,and after comprehensive consideration,the measure to apply damping rings is suggested.In order to research the noise reduction effect of the damping wheels,on the basis of ISO 3095and ISO 3381,the on-track noise measurements inside and outside vehicles are made for the new type 100km/h metro vehicles mounted with damping wheels on certain metro line in Beijing.The measurement result shows that the effect of noise reduction inside vehicle by the damping ring is not obvious,and is about 1dB at the standard measurement points outside vehicle,however,the noise reduction effect is obvious on wheel-rail noise near the field of the bogies,and the maximum noise reduction can reach 18dB.