船体结构流固耦合模态分析  

Model Analysis of Ship Structure in Water

作　　者：杨建民[1] 汪庠宝[1] 王国强[1] 

机构地区：[1]上海交通大学船舶与海洋工程系

出　　处：《上海交通大学学报》1993年第1期19-26,共8页Journal of Shanghai Jiaotong University

摘　　要：本文提出了一种计及流体与结构相互作用时船体结构模态计算的方法。船体结构用有限元法计算,流体运动则用布置在船体表面的线性分布的三角形元源汇模拟.利用干模态法求得船体结构在流体中前几个谐调的固有频率与国有模态,计算结果与实验值相当吻合。The paper presents a method for calculating the modes of ship struc- ture in water, in which the fluid-structure interaction is taken into account. The vibration of ship structure is calculated by the finite element method combined with the source-sink method of triangular patches with a linear variation of the source strength. The dry-mode method is applied to derive the natural frequen- cies and mode shapes of the ship structure in water. The calculated results are compard with the experimental data and the agreement is satisfactory.

关 键 词：模态分析 船舶振动 流固耦合 

分 类 号：U661.1[交通运输工程—船舶及航道工程]