地铁车辆部件隔声性能指标研究

Research of sound insulation performance index for metro vehicle components

地铁车辆部件作为重要噪声传递路径,其隔声性能对车内噪声有重要影响。文章以我国某型地铁车辆部件为研究对象,通过建立车内噪声预测分析模型,研究了车辆部件的隔声性能指标。结果表明,改变车门、车窗和风挡的隔声量,对车内噪声的抑制效果最显著。

As an important noise transfer path,the sound insulation performance index of metro vehicle components has an important influence on the interior noise.In this paper,the components of an metro vehicle are taken as research objects.By establishing the simulation model of interior noise,the sound insulation performance index of each component is analyzed.The results show that changing the sound transmission loss of door,window and windshield has the most significant effect on interior noise reduction.