加工误差分布规律对微穿孔板吸声性能的影响  

Influence of Distribution of the Processing Error on Sound Absorption Property of Micro-perforated Panel

作　　者：盖晓玲[1] 张斌[1] 李贤徽[1] 马智慧[1] 王文江[1] 

机构地区：[1]环境噪声与振动北京市重点实验室,北京市劳动保护科学研究所,北京100054

出　　处：《压电与声光》2015年第1期134-137,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(11274048;11102093);北京市自然科学基金资助项目(8142016);北京市科学技术研究院市级财政基金资助项目(PXM2014_178304_000004)

摘　　要：为了研究加工误差对微穿孔板吸声性能的影响,该文以微穿孔板理论和电声等效电路原理为基础,建立了考虑加工误差时,微穿孔板吸声的理论模型,数值分析了微孔尺寸成正态分布和平均分布两种形式时,微穿孔板吸声性能的变化情况。研究发现,当存在加工误差时,微穿孔板的吸声峰和吸声带宽都略有减小。In order to study the effect of machining error on the sound absorption properties of micro-perforated panel（MPP）absorber,the theoretical model of MPP on considering the effect of machining error is built based on the MPP theory and electro-acoustical equivalent circuit principle.The pore size distributions submit to the hypothesis of the normal distribution and average distribution are numerical discussed.Compared with the uniform diameter holes,the sound absorption peak is slightly lower and sound absorption bandwidth is slightly narrower when there are processing errors.

关 键 词：微穿孔板 加工误差 正态分布 平均分布 吸声峰值 吸声带宽 

分 类 号：TN384[电子电信—物理电子学]