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3D acoustic field analysis in mufflers using finite element method

Memoirs of the Faculty of Engineering, Yamaguchi University Volume 46 Issue 2 Page 305-311
published_at 1996-03
KJ00000157043.pdf
[fulltext] 554 KB
Title
有限要素法による消音器内部空間の三次元音場解析
3D acoustic field analysis in mufflers using finite element method
Creators Kojima Naoya
Creators Zhou Hai
Creators Suematsu Takanobu
Creators Miyoshi Naofumi
Source Identifiers
This paper describes the 3D analysis of acoustic field in mufflers and its acoustic attenuation using FEM. In applying the FEM to the open rigion of the muffler, the finite rigion was set to the muffler exit and the hemi-infinite rigion was set combining with the finite rigion outwards. The finite elements were introduced to the finite rigion and the decay type infinite elements to the hemi-infinite rigion. This method was applied to a cavity type muffler and the results were compared with both obtained through the transfer matrix method and pure tone experiments. The frequency characteristics of the attenuation of the muffler calculated by this method showed good agreements with the experiment results.
Languages jpn
Resource Type departmental bulletin paper
Publishers 山口大学工学部
Date Issued 1996-03
File Version Version of Record
Access Rights open access
Relations
[ISSN]0372-7661
[NCID]AN00244228
Schools 工学部