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Analysis of Transmission Loss for Pneumatic Valve-used Mufflers Based on Plane Wave Multi-sound-Sources
Author(s): SHI Hu-shan, ZHAO Sheng-dun, FAN Shu-qin, SEEN Ya-jing
Pages: 71-
74
Year: 2008
Issue:
4
Journal: HYDRAULICS PNEUMATICS & SEALS
Keyword: 消声器; 平面波; 声源; 流体噪声; 气动阀;
Abstract: 传统计算消声器传递损失的方法是基于单一平面波声源采用四端参数来进行计算的,这种方法不能很好地反映实际消声器对具有分布声源的降噪性能,因此,本文提出了基于多平面波声源,按声源点分解消声器的方法求解传递损失,同时在MATLAB中进行了仿真,其结果表明了用多声源法要比单一声源法所求得消声器的传递损失既能反映出消声器对分布声源的降噪性能,又更能逼近实际消声器的消声性能.与单一声源法和文献[6]之计算方法比较,其最大相对误差达20%左右.
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