摘 要：针对某型纯电动城市客车在行驶中存在的车内低频噪声压耳现象进行研究。首先，通过试验测试及数据分析，确定压耳现象形成机理；然后，基于CAE 仿真制定车身结构的优化方案；最后，通过实车验证，表明优化方案可行，压耳现象得到解决。
关键词：纯电动客车；低频噪声；压耳现象；声固耦合
文献标志码：A 中图分类号：U461.4 文章编号：1006-3331（2024）06-0015-04
Ear Pressure Phenomenon and Its Solution to Low-frequency Noise Inside a Pure Electric Bus
CHEN Xiaoping
Abstract: This paper studies the ear pressure phenomenon of low-frequency noise in a pure electric city bus during its operation. Firstly, it determines the mechanism of ear pressure phenomenon through experimental testing and data analysis. Subsequently, it formulates an optimization scheme for the vehicle body structure based on CAE simulation. Finally, it shows that the optimization scheme is feasible and the ear pressure phenomenon is solved through the real vehicle verification.
Key words: pure electric bus; low-frequency noise; ear pressure phenomenon; acoustic-structure coupling
