充液双层壳的振动与声辐射计算  

A numerical analysis of vibro-acoustic characteristics of an underwater double-shell

作　　者：侯国祥[1] 翁章卓[1] 祝玉梅[2] 吴崇健[2] 

机构地区：[1]华中科技大学交通科学与工程学院,湖北武汉430074 [2]武汉船舶设计研究所,湖北武汉430064

出　　处：《华中科技大学学报（自然科学版）》2005年第10期16-18,共3页Journal of Huazhong University of Science and Technology(Natural Science Edition)

基　　金：国家自然科学基金资助项目(50209003);国家重点基础研究发展计划资助项目(2002CB412309)

摘　　要：对某充液双层壳的结构振动和声辐射特性进行了研究.运用MSC/PATRAN建立结构的有限元模型,在MSC/NASTRAN平台上,考虑流固耦合效应,对水下双层壳结构进行频率响应分析,得出可用于声学分析的数据文件.再利用边界元软件SYSNOISE,导入上述结果文件作为边界条件,对双层壳结构进行声辐射数值分析.实例研究证明双层壳之间的不同肋骨设置对壳体的振动特性和结构声辐射的影响较开孔的数目影响大.This paper focused on the numerical analysis of vibro-acoustic characteristics of an underwater double-shell concluded by the use of structural FEM and acoustic BEM. Firstly, the whole structure was modeled by the finite element software MSC/PATRAN. On the basis of fluid-structure interaction, the vibration response characteristics were analyzed with software MSC/NASTRAN to form the data file for acoustic analysis. Then importing the file as boundary conditions, and the numerical analysis of sound radiation is processed by software SYSNOISE. Consequently, it was proved that the effect of different ribbing settings between the double-shell on the double-shell vibration and sound radiation is more obvious than that of different numbers of the opening.

关 键 词：双层壳 振动 流固耦合 声辐射 

分 类 号：U661.44[交通运输工程—船舶及航道工程]