对比分析不同轨道参数对车辆辐射噪声的影响

Comparative analysis of the influence of different track parameters on vehicle radiation noise

不同轨道线路条件下,测量同样型号车辆的辐射噪声相差4～5 dB(A)。文章针对这一现象,从试验方向开展原因分析,对不同轨道线路的粗糙度及衰减率指标进行测试,对比讨论了轨道噪声粗糙度和衰减率指标对轮轨噪声的影响,并针对性提出改善建议。

Under different track conditions, there is a difference of 4 to 5 dB(A) for the radiation noise of same type of vehicle. According to this phenomenon, this paper analyzes the reasons from test direction. The rail roughness and track decay rate are measured. The influence of rail noise roughness and track decay rate on wheel and rail noise is discussed by comparison. It puts forward some suggestions for noise improvement.