Analysis of Nfluence of Wheel-rail Toughness on Noise in Urban Rail Vehicles Under Tunnel Conditions
With the increase of operation time,the track roughness increases,the interior noise increases,and the passenger comfort decreases.Based on the line test data,the relationship between wheel-rail roughness and in-vehicle noise is explored.When the train runs in the tunnel at a speed of 60km/h,the roughness of the rail with a wavelength of 31.5-50mm exceeds the roughness of the C-class rail by 12dB,and thein-vehicle noise reaches 83dB.The rail roughness of wavelength 63-200mm has littleinfluence on the noise inside the car.The overall wheel roughness amplitude exceeds the A-class amplitude by about 11dB,and the interior noise reaches 83.3dBA;When the train runs at A speed of 80km/h and the overall wheel roughness amplitude exceeds the class A amplitude by about 6dB,the interior noise reaches 83.1dBA,and the total value of the interior noise ex-ceeds the phase standard limit.It is beneficial to reduce the influence of noise on passengers to formulate the wheel and rail grinding strategy with appropriate period.
万方数据
维普
