形状参数对消声器性能影响的数值分析.pdf

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2006 年 6 月噪声与振动控制第 3 期
文章编号:1006 - 1355(2006) 03 - 0096 - 03
形状参数对消声器性能影响的数值分析
方忠甫,刘正士
(合肥工业大学噪声与振动研究所,合肥 230009)
摘要:通常根据消声器的一些相关计算经验公式,推导出形状参数对消声器性能的影响,但随着消声器结构
日趋复杂化,经验公式已经不能够胜任,而且公式的应用往往存在其局限性。随着计算机计算技术的成熟,综合运
用专业软件进行数值模拟计算分析,不失为一种好的方法。通过对消声器理论研究,综合运用有限元软件 ANSYS
和声学软件 SYSNOISE 软件联合对扩张式消声器进行数值分析,最后将结果运用 MATLAB 进行直观的表示出来,
为消声器设计又添加了一新的手段。
关键2 词2 :声学;消声器;传2 递2损失;数值分析;有限元
中图分类号: TU112. 59 + . 7 文献标识码:A
The Numerical Analysis of Muffler
about the Influence of it′s Shape Parameters
FA N G Zhong f u , L IU Zhen shi
( Institute of Sound and Vibration Research , HeiFei University of Technology ,Heifei 230009 ,China)
Abstract :In general , we deduce the impact on Muffler′s function resulted from its shape parame
ters on the basis of some related experienced formulas. But with the development of Muffler , the
structure of the muffler is ing more and plicated. So the experienced formulas can
hardly solve the problems. Besides , the experienced formulas have their own deficiencies. As technolo
gy puter science has developed so quickly , it′s mon way to use professional software to an
alyze the problems and solve them. By studying the theory of the muffler , I do some numerical analysis
of the muffler with expansion chamber by use of FEM software ANSYS and Acoustic software SYS
NOISE , and then use MA TLAB to figure the r