管道流固耦合振动的行波方法研究  

Traveling Wave Method for Pipe Fluid-Structure Interaction

作　　者：任建亭[1] 林磊[1] 姜节胜[1] 

机构地区：[1]西北工业大学,西安710072

出　　处：《应用力学学报》2005年第4期530-535,共6页Chinese Journal of Applied Mechanics

基　　金：国家自然科学基金(10202020;50475147)资助项目

摘　　要：应用波动方法分析载流管道流固耦合振动问题。采用直梁模型,推导了管道流固耦合系统的轴向、横向波导方程及平面管系的坐标转换矩阵,通过节点位移连续和力平衡条件建立了耦合系统的散射模型。最终分析了两种耦合对载流管道振动的影响机理及流速变化对管道振动稳定性的影响。数值算例表明本文方法的正确性及有效性。The vibration induced from fluid-structure interaction in liquid-filled pipes is analyzed by the traveling wave method. The longitudinal and transverse wave-guide equation of the coupling system are developed respectively. The coordinate transformation matrix is constructed to assemble each element matrix to the global matrix of the pipe system, and the scattering model of the coupled fluid-structure system is obtained. The vibration characters in two types of coupled problems such as the Poissons and the junction interaction in liquid-filled pipes, and the pipe vibration stability are analyzed. The numerical examples verify the flexibility and efficiency of this method.

关 键 词：载流管道 流固耦合 行波法 

分 类 号：O353.4[理学—流体力学]