消声器消声单元的降噪性能研究  

The Study of Anechoic Performance on Muffler

作　　者：罗振华[1] 张先腾[1] 黄锦成[1] 

机构地区：[1]广西大学机械工程学院,广西南宁530004

出　　处：《装备制造技术》2008年第3期6-8,11,共4页Equipment Manufacturing Technology

摘　　要：利用GT-Power软件对消声器进行仿真,通过建立多种消声器的数学模型,计算得出消声器各消声单元在参数变化时的传递损失。结合试验数据及仿真计算结果,综合分析了各种消声结构的降噪性能和特点。结果表明在消声器结构设计中使用微穿孔结构及性能良好的吸声材料对提高消声性能具有明显的效果,而合理的运用多孔隔板结构对改善降噪性能也具有积极的作用。Several kinds of mathematic models of muffler and their transmission loss were computed using the software named GT-Power. By changing the parameters of muffler models and computation, we collected enough data for the analysis of the anechoic performance on manifold structure of muffler. The results show that： it＇ s useful to make use of perforated pipe or board and the sound absorption material for the design of mufller,and the right use of perforated baffle is also efficacious to improve the performance of noise elimination.

关 键 词：声学 消声器 仿真 GT—Power 

分 类 号：TK421.6[动力工程及工程热物理—动力机械及工程]