矩形弹性壳液耦合系统模态的有限元法分析  

Finite Element Modal Analysis on the Rectangular Elastic Fluid-shell Interaction System

作　　者：刘习军[1] 徐景满[1] 刘振宇[1] 

机构地区：[1]天津大学机械工程学院力学系,天津300072

出　　处：《机床与液压》2007年第6期102-103,共2页Machine Tool & Hydraulics

基　　金：国家自然科学基金资助项目(10572101)

摘　　要：为了进一步对矩形弹性壳液耦合系统产生低频大幅重力波问题进行研究,本文采用有限元法对其进行了动力学分析,首先得到了空壳和壳液耦合系统及水的几阶主要振型和频率;然后改变水的深度,得到系统频率与水深的关系曲线。本文所得结果与实验结果有较好的吻合,为深入研究矩形壳液耦合系统中的重力波现象提供了有力依据。To research the large-amplitude and low-frequency gravity waves in rectangular elastic fluid-shell coupled system, main mode shapes of the shell and the rectangular elastic fluid-shell interaction system and the water were obtained through the finite element method. By changing the depth of the water, the curve of the relation between the water level and system frequency was presented. The conclusions that numerical computation results and test results are almost consistent, which offer a powerful evidence for researching gravity waves.

关 键 词：壳液耦合 矩形壳 有限元法 模态分析 重力波 

分 类 号：O351[理学—流体力学]