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为降低新干线列车发出的噪声,首先试图定量估算滚动噪声的贡献。随后,通过比较测量的噪声与分析估算的滚动噪声,确定空气动力噪声对车辆下部总噪声的贡献。研究结果显示,当车辆高速运行时,轨道附近测点处空气动力噪声对车辆下部总噪声的贡献比滚动噪声大。
To reduce the noise emitted by the Shinkansen train, first try to estimate the contribution of rolling noise quantitatively. Subsequently, the contribution of aerodynamic noise to the overall lower vehicle noise was determined by comparing the measured noise with the estimated rolling noise. The results show that the aerodynamic noise near the track near the track contributes more to the total noise of the vehicle than the rolling noise when the vehicle runs at high speed.