微穿孔板吸声体非线性声学特性初探  

Rudimentary researches on nonlinear properties of microperforated-panel

作　　者：刘克[1] 焦风雷[1] 乔五之[2] 

机构地区：[1]中科院声学研究所,北京100080 [2]北京轻工业学院,北京100037

出　　处：《声学技术》2001年第3期135-136,139,共3页Technical Acoustics

摘　　要：文章以马大猷教授提出的微穿孔板非线性声阻公式为依据 ,提出了非线性声阻作用的临界条件 ,并由此进行应用于高声强下微穿孔板吸声体的计算机辅助设计。According to Prof. Maa Dah you's equation of nonlinear acoustic resistance of microperforated panel(MPP) absorber, some critical condtion equations of nonlinear acoustic resistance are proposed in this paper. Additionally, these critical conditional equations are applied to computer aided design (CAD) on MPP under higher sound intensity. Though experiments of MPP, on which the diameter of perforations is less than 0.3 mm,the rudimentary researches of nonlinear properties of MPP are made also. And then, the practicability of CAD on MPP under higher sound intensity is proved experimentally.

关 键 词：微穿孔板吸声体 非线性声学特性 非线性声阻 计算机辅助设计 声阻抗率 

分 类 号：TB535.1[理学—物理] O422.7[理学—声学]