多层微穿孔板吸声特性研究  

A Study on the Sound Absorption Characteristics of the Multilayer Microperforated Panel

作　　者：解龙翔 陈广智 张玲玲 XIE Longxiang;CHEN Guangzhi;ZHANG Linging(School of Electronic and Information Engineering,Changshu Institute of Technology,Changshu 215500,China)

机构地区：[1]常熟理工学院电子信息工程学院,江苏常熟215500

出　　处：《常熟理工学院学报》2024年第2期31-38,共8页Journal of Changshu Institute of Technology

基　　金：国家自然科学基金项目“功能基元序构声学材料的耦合增强效应与逆向设计研究”(92263207)。

摘　　要：本文研究了在大背腔情况下多层微穿孔板结构的设计与吸声特性问题.在实际应用中,根据电-力-声类比法,微穿孔板吸声结构可以等效为电阻-电容串联的电路系统.但随着背部空腔深度的不断增加,传统的电-力-声类比法在分析多层微穿孔板结构吸声特性时变得十分复杂,且计算精度较低.鉴于此,本文提出了一种传递矩阵的计算方法,用于分析多层微穿孔板结构的吸声特性.并结合有限元仿真分析方法,通过数值算例验证了该方法的正确性与有效性.In the paper,the design and sound absorption characteristics of the multi-layer micro-perforated panel with large back cavity are studied.Based on the electric-force-acoustic analogy algorithm,the micro-perforated panel could be equivalent to the circuit system of resistance-capacitance series.But as the depth of the back cavity increases,the electric-force-acoustic analogy algorithm grows complicated for analyzing the sound absorption characteristics,and the calculation accuracy is low.In view of this,a transfer matrix method is proposed.The accuracy and effectiveness of the proposed method were verified by numerical examples with the finite element method.

关 键 词：微穿孔板吸声结构 电-力-声类比法 传递矩阵法 吸声特性 

分 类 号：TB535[理学—物理]