噪声与振动控制2016，Vol.36Issue(2)：121-125,5.DOI:10.3969/j.issn.1006-1335.2016.02.027
某特种车车内低频噪声分析与改进
Analysis and Improvement of Interior Low Frequency Noise in a Special Vehicle
欧健 1刘美志 1杨鄂川 2刘伟1
作者信息
- 1. 重庆理工大学 车辆工程学院，重庆 400054
- 2. 重庆理工大学 机械工程学院，重庆 400054
- 折叠
摘要
Abstract
To solve the problem of high noise level in a special vehicle, the acoustic-structure coupling finite element model for the vehicle’s body was built. Frequency response analysis of the vehicle’s body and the sound pressure response analysis of the interior noise were carried out. The results obtained by simulation and by road experiments were compared. The validity of the structure-acoustic model was verified. Then, the acoustic properties of the internal cavity of the cab were analyzed using the acoustic-structure coupling boundary element method. Some specific frequencies which may affect the body noise were recognized. Contribution analysis method was used to identify those panels which have the most significant contribution to the internal sound pressure. Damping materials were applied to those panels, and the internal noise level was markedly reduced.关键词
声学/声固耦合/频响分析/声学贡献分析/降噪Key words
acoustics/acoustic-structure coupling/frequency response analysis/acoustic contribution analysis/noise reduction分类
通用工业技术引用本文复制引用
欧健,刘美志,杨鄂川,刘伟..某特种车车内低频噪声分析与改进[J].噪声与振动控制,2016,36(2):121-125,5.
