多层均匀材料复合结构的声反射透射特性研究  

Study of the Sound Reflection and Transmission of Homogeneous Composite Multiple-layer Structure

作　　者：文钢[1] 董华玉[1] 张晓兵[1] 玄兆林[1] 

机构地区：[1]海军工程大学兵器工程系,武汉430033

出　　处：《武汉理工大学学报（交通科学与工程版）》2008年第5期899-902,共4页Journal of Wuhan University of Technology（Transportation Science & Engineering）

基　　金：国防预研项目资助(批准号:2010301010101)

摘　　要：采用传递矩阵方法,依据层界面上应力和振速的连续性,从理论上推导了2种典型的任意多层均匀材料复合结构的反射透射系数公式,研究了一些常用复合结构形式的声反射和透射特性.数值计算结果表明,有橡胶层的多层复合结构的吸声效果取决于各层材料的声学性质、厚度以及声波的入射角.Homogeneous composite multiple layer structure is a kind of important structure in acoustics and widely used in practice. In present article, in terms of the continuity conditions of stress and vibration velocity on interface, the formulae of two kind of representative homogeneous composite multiple layer structures are derived in theory by means of Transfer Matrix Method. And then, the characteristics of the sound reflection and transmission of some customarily used composite multiple layer structures are studied. By numerical calculation, results indicate that the absorption effectiveness is depended on the acoustic properties, the thickness of layer as well as the incidence angle of sound.

关 键 词：多层复合结构 传递矩阵 反射透射 

分 类 号：O427[理学—声学]