摘要
某些客车怠速时,车辆中部靠前位置会感觉到明显的压迫感。本文通过测试某问题车辆的低频噪声,并对骨架模态和车厢声学模态进行计算和分析,发现其主要原因为车辆骨架的局部模态位置与车厢的声学模态位置相重合,最后通过对车辆骨架的改进,解决了车辆怠速低频噪声问题。
According to obviously pressure feeling in the middle front position of some coaches when running in idle, the authors test the low frequency noise and calculate the frame modes and acoustics modes of a problem coach. They find that the main reason is the frame modal frequency coincides with the acoustics modal frequency. Finally the low frequency noise problem is solved through improving the frame structure of the coach.
出处
《客车技术与研究》
2016年第3期18-20,共3页
Bus & Coach Technology and Research
关键词
客车
骨架设计
模态分析
低频噪声
coach
frame design
modal analysis
low frequency noise
