基于传递矩阵法的压电复合结构声学性能研究  

Investigating the acoustic performance of piezoelectriccomposite absorbers by transfer matrix method

作　　者：杨丹[1] 黄其柏[1] 王剑亮[1] 

机构地区：[1]华中科技大学数字制造装备与技术国家重点实验室,湖北武汉430074

出　　处：《华中科技大学学报（自然科学版）》2010年第12期129-132,共4页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：高等学校博士学科点专项科研基金资助项目(20070487403);中央高校基本科研业务费资助项目(2010MS080)

摘　　要：提出了一种将压电材料与被动吸声结构结合起来进行复合吸声的方法,并采用传递矩阵法对其声学性能进行了研究.首先,根据压电材料的控制方程和边界条件,求得压电材料上下表面声压和质点速度的传递矩阵;然后,对由压电材料和非均匀橡胶材料组成的复合吸声结构,利用递推方法求得总的传递矩阵;最后,对背部边界条件为钢板时不同非均匀橡胶结构参数情况下的压电复合吸声结构的控制电压进行了理论计算和对比分析.A method of composite acoustic absorption was proposed by combination of piezoelectric materials with passive absorption structure,whose acoustic performance was researched by transfer matrix method.First,the transfer matrix of the single layer piezoelectric material＇s sound pressure and particle velocity between upper surface and lower surface were calculated based on piezoelectric material＇s governing equations and boundary conditions.Then,the total transfer matrix of the piezoelectric composite absorbers composed of piezoelectric materials and non-uniform rubber materials was calculated by using recursive method.Finally,theoretical calculation and comparative analysis of the control voltage of the piezoelectric composite absorbers with different non-uniform rubber structure＇s parameters and steel back boundary condition are carried out.

关 键 词：压电材料 被动吸声结构 复合吸声结构 主动控制 传递矩阵法 

分 类 号：TN911.4[电子电信—通信与信息系统]