Analysis of Influence of Track Dynami Characteristics on Noise in Urban Rail Vehicles
Wheel-rail noise is a systematic problem concerning vehicle-track coupling and wheel-rail relation-ship.Considering the impact on wheel-rail coupling matching,vehicle safety,vehicle smoothness,environmental vibration,vehicle vibration noise,etc.,rail roughness and attenuation rate are important track parameters af-fecting noise.Rail roughness affects the frequency band of 400～800 Hz.Develop a reasonable rotation repair cy-cle,regular grinding wheels and tracks can effectively reduce the internal noise,after grinding can reduce the in-ternal noise of more than 2dB.The track attenuation rate generally exceeds the standard limit,and the installa-tion of vibration energy absorption structure can reduce the internal noise,and the maximum reduction is more than 10dB.The damping structure is installed on the wheel to improve the overall damping of the wheel and real-ize the effective control of the wheel radiated noise.The above measures can effectively reduce the noise inside the car and improve the ride comfort.
NETL
NSTL
万方数据
维普
