噪声与振动控制Issue(4)：126-130,5.DOI:10.3969/j.issn.1006-1335.2013.04.027
传递矩阵法的排气消声器声学性能分析
Acoustic Performance Analysis of Exhaust Muffler Using Transfer Matrix Method
摘要
Abstract
The acoustic performance of the exhaust muffler of a certain type of cars was studied using transfer matrix method. The muffler was divided into some basic silencing units, the transfer matrix of each silencing unit was analyzed, and finally the global transfer matrix of the muffler was obtained by matrix integration. Then, the acoustic model of the muffler was established. The frequency characteristic of transmission loss of the muffler was calculated using Matlab code programming. In addition, the finite element analysis codes Sysnoise and Fluent were used for simulation of the acoustic performance to get the accurate frequency characteristic of the transmission loss. The results obtained with both methods were compared mutually and the accuracy of the acoustic model based on the transfer matrix method was verified. And the basis for improvement and optimization of the muffler was provided.关键词
声学/排气消声器/传递矩阵/传递损失/消声单元/声学模型Key words
acoustics/exhaust muffler/transfer matrix/transmission loss/silencing unit/acoustic model分类
通用工业技术引用本文复制引用
程春,李舜酩,贾骁..传递矩阵法的排气消声器声学性能分析[J].噪声与振动控制,2013,(4):126-130,5.基金项目
大学生创新训练计划 （）
