管材参数对输液管流固耦合振动的影响  

Influence of pipe parameters on fluid-structure couped vibration of a fluid-conveying pipe

作　　者：杨超[1] 范士娟[1] 

机构地区：[1]华东交通大学载运工具与装备省部共建教育部重点实验室,南昌330013

出　　处：《振动与冲击》2011年第7期210-213,共4页Journal of Vibration and Shock

基　　金：载运工具与装备省部共建教育部重点实验室开放基金资助

摘　　要：采用特征线法对一蓄水池-管道-阀门(RPV)系统的流固耦合振动响应进行了数值计算,研究了管道结构阻尼、管材泊松比以及管道壁厚管道材料对系统振动响应的影响。结果表明:随着管道结构阻尼的增大,管壁本身的振动受到抑制;当管道结构阻尼大于某一临界值时,系统的振动能量主要集中在液体里,造成液体压力能的升高;随着泊松比的增大或管道壁厚的增大,液体的压能增大,管壁的轴向振动强度降低。Numerical calculation of fluid-structure coupled vibration responses of a reservoir-pipe-valve（RPV） system was conducted with the method of characteristics（MOC）,the influences of pipe structural damping,pipe Pois-son＇s ratio and pipe wall thickness on vibration responses of the RPV system were studied.The numerical results showed that the axial vibration energy of the pipe wall is weakened with increase in pipe wall damping,when pipe wall damping is greater than a certain value,the vibration energy of the system mostly concentrates in fluid which raises fluid pressure energy;the fluid pressure energy increases but the axial vibration energy of pipe wall drops with increase in pipe wall Poisson＇s ratio or its wall thickness.

关 键 词：输液管道 流固耦合振动 管道参数 特征线法 数值计算 

分 类 号：O353.4[理学—流体力学]