摘要
用三维声学软件来分析不同截面布置对消声器声学性能的影响,发现:(1)当截面布置只改变排列位置或者位置变动比较小时,虽然大体趋势一样,但是部分频段变化较大。(2)当截面布置不同时,消声器的传递损失在比较大的频率范围内有明显区别。根据计算结果,按照具体排气噪声频谱,就可以在一定程度上对消声器进行进一步的优化设计。
Since one-dimensional and two-dimensional commercial codes may not be used to accurately analyze the acoustical performance for resistance mufflers in the case of different arrangement of cross-sections,three-dimensional software is employed to analyze this problem.It is found that different arrangements of cross-sections can induce different transmission loss in a large frequency range.According to the exhaust noise spectrum and the computation results,the design of the mufflers can be optimized further.
出处
《噪声与振动控制》
CSCD
北大核心
2010年第3期153-155,共3页
Noise and Vibration Control
关键词
声学
传递损失
有限元
截面布置
消声器
acoustics
transmission loss
finite element
arrangement of cross-sections
muffler
