穿孔板吸声特性研究  

Sound Absorption Performance of Perforated Plate

作　　者：秦涛[1] 梁满营 葛新锋[1] QIN Tao;LIANG Manying;GE Xinfeng(School of Electrical and Mechanical Engineering(Engineering Training Centre),Xuchang University,Xuchang 461000,China)

机构地区：[1]许昌学院电气与机械工程学院(工程训练中心),河南许昌461000

出　　处：《许昌学院学报》2021年第5期116-120,共5页Journal of Xuchang University

基　　金：河南省科技攻关项目(182102210508)。

摘　　要：以吸声系数作为评价穿孔板吸声特性优劣的性能指标.根据穿孔板吸声系数理论对塑料薄膜制成的薄膜穿孔板吸声特性进行理论计算,取相同孔板背衬空腔深度、穿孔板厚度、穿孔孔径和穿孔率的穿孔板,采用驻波管法对其吸声特性进行试验研究测量其吸声系数,通过对比理论计算结果和实验结果发现,理论计算的吸声系数和实验测得的吸声系数具有较好的一致性.The sound absorption coefficient is used as the performance index to evaluate the sound absorption characteristics of perforated plates.According to the theory of sound absorption coefficient of perforated plate,the sound absorption characteristics of perforated plate made of plastic film are calculated theoretically.The perforated plate with the same hole backing cavity depth,perforated plate thickness,perforated aperture and perforated rate is used to test and measure its sound absorption coefficient.By comparing the theoretical calculation results with the experimental results,it is found that the calculated sound absorption coefficient is in good agreement with the measured one.

关 键 词：穿孔板 薄膜 吸声特性 驻波管法 

分 类 号：TP391[自动化与计算机技术—计算机应用技术]