Finite element acoustic simulation based shape optimization of a muffler

被引：84
|
作者：
Barbieri, R [1 ]
Barbieri, N [1 ]
机构：
[1] Pontificia Univ Catolica Parana, BR-80215901 Curitiba, Parana, Brazil
来源：
APPLIED ACOUSTICS | 2006年 / 67卷 / 04期
关键词：
muffler; shape optimization; transmission loss; Zoutendijk's method;
D O I：
10.1016/j.apacoust.2005.06.007
中图分类号：
O42 [声学];
学科分类号：
070206 ; 082403 ;
摘要：
This paper describes a methodology which combines finite element analysis and Zoutendijk's feasible directions method for mufflers shape design. The main goal is to obtain the dimensions of the acoustic muffler with the transmission loss (TL), being maximized in the frequency range of interest. The improved four parameters method is used for TL evaluations and the Helmholtz's equation is solved numerically with the finite element method (FEM). The quadratic triangular finite element meshes are adequately constructed to control the pollution error and the optimization problem is solved using the Zoutendijk's feasible directions method due to robustness and efficiency for problems with nonlinear constraints. Numeric experiments performed with circular expansion chambers with extended inlet and outlet show results for constrained and unconstrained shape optimization. (c) 2005 Elsevier Ltd. All rights reserved.
引用
收藏
页码：346 / 357
页数：12
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