首页 | 本学科首页   官方微博 | 高级检索  
     检索      

水下多层均匀材料的声特性
引用本文:赵洪,靳云姬,郭成山,谭红波,徐海亭.水下多层均匀材料的声特性[J].应用声学,1999,18(4):8-12.
作者姓名:赵洪  靳云姬  郭成山  谭红波  徐海亭
作者单位:1. 中国科学院声学所北海研究站青岛,266023
2. 中船总公司系统工程部北京,100036
摘    要:本文研究水和空气中由不同厚度的两层弹性板及消声橡胶共同组成的分层介质在斜入射时的声特性,并采用数值方法求解多层结构声场的线性方程组。得到反射,透射系数,当板的厚度远小于波长时,采用弹性薄壳振动模型和弹性波模型进行计算,它们的结果基本相同,但是薄壳振动模型更便于计算和理论分析;对系统反射系数和透射系数的计算结果表明,系统增加消声橡胶层后,极大地改变后射系数和透射系数的频率响应;频率升高,反射系数减小

关 键 词:水声  多层结构  斜入射  声特性

Sound fields in multiple-layer homogeneous structures in water
Zhao Hong,Jin Yunji,Guo Chengshan,Tan Hongbo and Xu Halting.Sound fields in multiple-layer homogeneous structures in water[J].Applied Acoustics,1999,18(4):8-12.
Authors:Zhao Hong  Jin Yunji  Guo Chengshan  Tan Hongbo and Xu Halting
Institution:Qingdao Acoustics Laboratory, Institute of Acoustics, The Chinese Academy of Sciences, Qingdao 266023;Qingdao Acoustics Laboratory, Institute of Acoustics, The Chinese Academy of Sciences, Qingdao 266023;Qingdao Acoustics Laboratory, Institute of Acoustics, The Chinese Academy of Sciences, Qingdao 266023;Qingdao Acoustics Laboratory, Institute of Acoustics, The Chinese Academy of Sciences, Qingdao 266023;CSSC Systems Engineering Research Institute, Beijing 100036
Abstract:In this paper, the sound fields in a multiple-layer structure for oblique incidence wave were studied, the structure located between water and air being composed of two elastic plates of different thickness and a rubber layer. For the single plate in water, the vibration model of a thin plate and elastic wave model of a finite-thickness plate are used to calculate the sound fields when the thickness of the plate is small in comparison with the elastic wavelength. The calculated results of the sound reflection and transmission coefficients of the plate for the two models are same, but the thin plate model is simpler in calculation and analysis. In multi-layer structure, it is found that the coefficients are greatly changed when the structure is covered with a rubber layer, the reflective sound decreases as frequency increases and the resonant peak value of the coefficients are controlled effectively.
Keywords:Underwater acoustics  Multiple-layer structure  Oblique incidence  Sound characteristics
本文献已被 CNKI 维普 万方数据 等数据库收录!
点击此处可从《应用声学》浏览原始摘要信息
点击此处可从《应用声学》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号