噪声与振动控制

›› 2012, Vol. 32 ›› Issue (2): 151-154.DOI: 10.3969/j.issn.1006-1355-2012.02.037

• 7.减振降噪设备和器材 • 上一篇    下一篇

组合式穿孔管消声器声学仿真

贺岩松,李景,卢会超   

  1. （ 重庆大学 机械工程学院， 重庆 400030 ）
  • 收稿日期:2011-08-15 修回日期:2011-08-30 出版日期:2012-04-18 发布日期:2012-04-18
  • 通讯作者: 李景

Acoustic Simulation of Mufflers with Multiple Perforated Tubes

HE Yan-song, LI Jing,LU Hui-chao   

  1. ( College of Mechanical Engineering, Chongqing University, Chongqing 400030, China )
  • Received:2011-08-15 Revised:2011-08-30 Online:2012-04-18 Published:2012-04-18
  • Contact: HE Yan-song

摘要： 运用声学有限元法，对三种组合结构的穿孔管消声器进行声学仿真计算，对比分析不同穿孔率对上述消声器声学性能的影响。并对某大型穿孔管消声器的整体声学性能进行仿真计算，结果表明其1000HZ以下中低频段的消声效果不佳，为后续改进工作提供某些依据。

关键词: 声学, 传递损失, 仿真分析, 穿孔管消声器

Abstract: Based on acoustic FEM, the transmission losses of three mufflers with different combinations of perforated tubes were computed. The influences of the perforation porosities of the tubes on the transmission losses of the mufflers were discussed. Then, the acoustic performance of a complicated muffler with multiple perforated tubes was stimulated. The result shows that the transmission loss of the muffler is low when the noise frequency is below 1 000 Hz. This work provides a reference for further improvement of the muffler.

Key words: acoustics, transmission loss, simulation, muffler with perforated tubes

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