摘要
应用三维解析法和有限元法研究了多入口多出口抗性消声器的声学特性,分析了进出口管相对角度、偏置距离、进出口管数量和穿孔管结构参数对消声器声学特性的影响。结果表明,进口管与出口管相对角度和偏置距离的变化影响消声器的声学特性,尾管扩张器和内插管可以提高消声器中低频的消声量,穿孔管和多扩张腔结构可以改善消声器中高频消声性能。最终表明,多入口多出口能同时提高消声器的声学性能和阻力特性。
The acoustic performance of multi-inlet multi-outlet reactive muffler is investigated by using three-dimensional analytical technique and finite element method. The effects of the relative angle, offset and num- ber of inlet and outlet tubes as well as the structural parameter of perforated tube on the acoustic behavior of muffler is explored. The results show that the relative angle and offset of inlet and outlet tubes have certain influence on the acoustic characteristic of muffler. Sound attenuation in low and medium frequencies can be increased by adding tail tube expander and internal insertion tube. Muffler with perforated tube and multiple expansion chambers shows bet- ter performance in medium and high frequencies. Finally it is concluded that the muffler with multi-inlet and multi- outlet has better behavior in both acoustic and resistance performances.
出处
《汽车工程》
EI
CSCD
北大核心
2014年第2期243-248,253,共7页
Automotive Engineering
基金
国家高技术研究发展计划(863计划)项目(2006AA110101)资助
关键词
抗性消声器
多入口多出口
声学性能
reactive muffler
multi-inlet and multi-outlet
acoustic performance
