噪声与振动控制

›› 2011, Vol. 31 ›› Issue (4): 169-172.DOI: 10.3969/j.issn.1006-1355-2011.04.040

• 7.减振降噪设备和器材 • 上一篇    下一篇

空气滤清器的声振耦合特性分析及优化

郭付洋1,陈剑2   

  1. （ 合肥工业大学 噪声振动工程研究所， 合肥 230009 ）
  • 收稿日期:2010-09-14 修回日期:2010-12-06 出版日期:2011-08-18 发布日期:2011-08-18
  • 通讯作者: 郭付洋

Analysis of Vibro-acoustic Property and Optimization of Air Filter

GUO Fu-yang，CHEN Jian   

  1. ( Institute of Sound and Vibration Research, Hefei University of Technology, Hefei 230009, China )
  • Received:2010-09-14 Revised:2010-12-06 Online:2011-08-18 Published:2011-08-18
  • Contact: GUO Fu-Yang

摘要： 利用LMS Virtual lab软件对某空气滤清器的声振耦合特性进行分析。计算空气滤清器在模拟发动机激励下，壳体结构与空气滤清器内部声腔耦合产生的辐射噪声。并分析结构模态对辐射噪声的贡献量。为提高空气滤清器的结构特性，根据分析结果，利用Hypermesh软件中的Optistruct模块对空气滤清器的壳体进行形貌优化，提出较好的优化方案。

关键词: 声学, 声振耦合, 辐射噪声, 形貌优化, 空气滤清器

Abstract: Acoustic-vibration coupling property of an air filter is analyzed by LMS Virtual lab in this paper. The radiation noise by the coupling effect of the filter’s case and the interior acoustic chamber is computed when the air filter is excited by the simulated engine force. Contribution of structural modes to the radiation noise is analyzed. To improve the structural property, the configuration of the air-filter’s case is optimized according to the analysis result using the Optistruct module of Hypermesh, and the optimal scheme is given.

Key words: acoustics, vibro-acoustic property, radiated noise, topography optimization, air filter

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