内、外壳对水下双层圆柱壳声振性能影响分析  

Influence by the inner shell and the outer shell on sound-vibration characteristics from double cylindrical shells in water

作　　者：陈美霞[1] 金家坤[1] 彭旭 骆东平[1] 

机构地区：[1]华中科技大学交通学院,武汉430074 [2]武汉第二船舶研究所,武汉430064

出　　处：《船舶力学》2009年第4期628-634,共7页Journal of Ship Mechanics

基　　金："十五"国防预研项目(10105010203);中国博士后科学基金资助项目(20040350633)

摘　　要：用解析法研究了三种壳间连接形式(无连接构件、托板或实肋板连接)的双层圆柱壳的内、外壳振动和声辐射性能的差别,并求出了以内壳为基准的双层壳声振性能的修正值。研究结果表明:内壳对双层壳的振动和声辐射起控制作用,外壳的影响可以用修正值来修正;壳间连接越紧密,外壳的影响越小(修正值越小),即外壳对实肋板连接的双壳体影响最小,对无连接构件的双壳体影响最大。The distinctions of vibration and sound radiation characteristics of the inner and outer shells with three connected types of shells （without connected component,splint connected and annular plate connected） are compared using analytic method, and the revised value of sound-vibration characteristics of the double cylindrical shells is resolved based on the inner shell. The results of study show that the inner shell plays key control function on the vibration and sound radiation of the double cylindrical shells, and the affection of the outer shell can be revised by using the corrective value; the more closely two shells connected, the less the affection of the outer shell is,namely the affection of the outer shell on the double cylindrical shells connected by annular plates is lest, and the affection of the outer shell on the double cylindrical shells without connected components is biggest.

关 键 词：双层圆柱壳 壳间连接形式 内壳 外壳 振动和声辐射 

分 类 号：U661.44[交通运输工程—船舶及航道工程]