基于COMSOL的泡沫铝阻性消声器消声性能研究  

Study on The Silencing Performance of Foam Aluminum Resistive Muffler Based on COMSOL

作　　者：付强 Fu Qiang(Xi'an Aeronautical Polytechnic Institute,Xi'an Shanxi 710089)

机构地区：[1]西安航空职业技术学院,陕西西安710089

出　　处：《内燃机与配件》2022年第14期46-48,共3页Internal Combustion Engine & Parts

基　　金：西安航空职业技术学院自然科学类校级一般项目(项目号:21XHZK-14)。

摘　　要：基于Delany-Bazley-Miki多孔介质声学模型,运用COMSOL有限元软件计算了泡沫铝阻性消声器的传递损失,研究和分析了消声器内部穿孔管穿孔率、壁厚、孔径以及泡沫铝吸声材料厚度、流阻率、空气背衬等结构参数对其消声性能的影响。结果表明传递损失随结构参数的变化基本呈现周期性规律,其中穿孔管穿孔率较小时消声性能较差,泡沫铝材料厚度在不同频段时对其传递损失的影响不同。Based on Delany bazley Miki porous media acoustic model, the transmission loss of foam aluminum resistive muffler was calculated by using COMSOL finite element software. The effects of perforated pipe perforation rate, wall thickness, aperture, and the thickness of foam aluminum sound-absorbing material, flow resistance, air backing and other structural parameters on its silencing performance were studied and analyzed. The results show that the transmission loss basically presents a periodic law with the change of structural parameters. The silencing performance of perforated tubes is poor when the perforation rate is small, and the influence of the thickness of foam aluminum material on its transmission loss is different in different frequency bands.

关 键 词：泡沫铝 COMSOL 传递损失 结构参数 

分 类 号：TB5352[理学—物理]