噪声与振动控制

›› 2010, Vol. 30 ›› Issue (1): 51-54.DOI: 10.3969/j.issn.1006-1355.2010.01.051

• 运载工具振动与噪声 • 上一篇    下一篇

《拖拉机驾驶室声学特性仿真研究》

彭学娟，李丽君，沈玉凤，刚宪约   

  1. （山东理工大学交通与车辆工程学院，山东淄博255049）
  • 收稿日期:2009-04-23 修回日期:1900-01-01 出版日期:2010-02-18 发布日期:2010-02-18
  • 通讯作者: 彭学娟

《Study on Simulation of Acoustics Characteristics of Tractor’s Cab》

PENG Xue-jun，LI Li-jun,SHEN Yu-feng,GANG Xian-yue   

  1. (School of Transportation and Vehicle Engineering, Shandong University of Technology, Zibo Shandong255049， China)
  • Received:2009-04-23 Revised:1900-01-01 Online:2010-02-18 Published:2010-02-18
  • Contact: PENG Xue-jun

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摘要：

利用有限元分析软件ANSYS建立FT80拖拉机驾驶室空腔模型，将模型导入声学分析软件SYSNOISE,并在SYSNOISE中实现了有限元法和间接边界元法的声固耦合；采用间接边界元法分析计算驾驶室的声学特性；对空腔、有座椅、有座椅及驾驶员三种模型驾驶室的耳旁声场声压进行比较；分析研究座椅和驾驶员对驾驶室内的声学贡献，证明座椅、驾驶员对拖拉机驾驶室内噪声存在一定的影响，建模时应加以考虑。

关键词: 声学, 耦合, 边界元, 驾驶室

Abstract:

The finite element model of FT80 tractor’s cab is established by using FEM software ANSYS. Then, using the acoustics software SYSNOISE, the soundsolid coupling analysis with the combination of FEM and intermediate BEM is carried out. By means of the intermediate BEM, the acoustic characteristics of the cab are computed and analyzed. The sound pressures of neartheear sound fields of three cases—empty cab, cab with a chair in it, and cab with a chair and a driver in it—are computed and compared. The acoustic contribution of the chair and the driver in the cab is calculated and analyzed. It is proved that the chair and the driver have some influences on the internal noise of the cab. These influences should be considered in the modeling.

Key words: acoustics, coupling, BEM, cab

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