噪声与振动控制

›› 2010, Vol. 30 ›› Issue (3): 153-155.DOI: 10.3969/j.issn.1006-1355.2010.03.040

• 减振降噪设备和器材 • 上一篇    下一篇

《不同截面布置的抗性消声器三维声学性能分析》

曹玉煌，罗马吉，刘志恩   

  1. （武汉理工大学汽车工程学院，武汉430070）
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2010-06-18 发布日期:2010-06-18
  • 通讯作者: 曹玉煌

《Threedimensional Acoustical Analysis for a Resistance Muffler in the Case of Different Arrangements of Crosssections》

CAO Yu-huang，LUO Ma-ji，LIU Zhi-en   

  1. (Collage of AutoEngineeting, Wuhan University of Technology, Wuhan 430070, China)
  • Received:1900-01-01 Revised:1900-01-01 Online:2010-06-18 Published:2010-06-18
  • Contact: CAO Yu-huang

PDF

摘要： 用三维声学软件来分析不同截面布置对消声器声学性能的影响，发现：(1)当截面布置只改变排列位置或者位置变动比较小时，虽然大体趋势一样，但是部分频段变化较大。(2)当截面布置不同时，消声器的传递损失在比较大的频率范围内有明显区别。根据计算结果，按照具体排气噪声频谱，就可以在一定程度上对消声器进行进一步的优化设计。

关键词: 声学, 传递损失, 有限元, 截面布置, 消声器

Abstract: Since onedimensional and twodimensional commercial codes may not be used to accurately analyze the acoustical performance for resistance mufflers in the case of different arrangement of crosssections, threedimensional software is employed to analyze this problem. It is found that different arrangements of crosssections can induce different transmission loss in a large frequency range. According to the exhaust noise spectrum and the computation results, the design of the mufflers can be optimized further.

Key words: acoustics, transmission loss, finite element, arrangement of crosssections, muffler

中图分类号: