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为了研究由于车轮与钢轨表面凹凸使两者强制性位移造成激振产生滚动声音的降低方法,1979年,在新干线综合试验线(小山地区)的962型试制电动车上安装了图1所示的5种车轮,调查了噪声对策的效果,得出的结果如下: (1)图1所示的隔音车轮,虽然车轮振动降低了,但是跟标准车轮相比较,噪声级没有变化。 (2)连续记录噪声级,不同种类的车轮的差别很小。 (3)车辆运行时的噪声级相当高,不能用撞击试验时车轮的振动速度级与噪声级之关系来说明。
In order to study how to reduce rolling noise due to the forced displacement of both the wheel and the rail surface due to the concave and convex of the wheel surface and the rail surface, a model 962 pilot electric vehicle equipped with the Shinkansen comprehensive test line (hill) was installed in 1979 The results were as follows: (1) The noise-proof wheels shown in FIG. 1 showed no change in the noise level compared with the standard wheels although the wheel vibration was reduced. (2) continuously record the noise level, the difference between different types of wheels is small. (3) The noise level of the vehicle during operation is quite high. It can not be explained by the relationship between the vibration speed level of the wheel and the noise level during the impact test.