输送流体管道的固液耦合振动分析  

The Solid-liquid Coupling Vibration Analysis of the Pipe for Fluid Trasportation

作　　者：佟明君 赵树山[2] 王世忠[2] 

机构地区：[1]北京中创信测科技股份有限公司,北京180001 [2]哈尔滨工业大学航天学院,黑龙江哈尔滨150001

出　　处：《哈尔滨理工大学学报》2004年第2期135-138,共4页Journal of Harbin University of Science and Technology

摘　　要：用有限元法推导输送流体管道固液耦合振动方程,用QR法计算管道基频、不同边界条件管道的临界速度和前四阶固有频率,用Newmark法计算输送流体管道的动力响应,分析了被输送流体的速度对管道固有频率的影响。对于飞机、火箭发动机燃料供给管道、水轮机供水管道等的设计有参考价值。The finite element matrix equation of solid-liquid coupling vibration of the pipe for fluid transportation was first derived, the critical velocity and the first four natural frequencies of vibration of the pipes with different boundary conditions were calculated by using the QR method, the dynamic response of the liquid transportation pipe was also calculated by using the Newmark method, and finally how the inherent vibration frequency of the pipe was effected by the liquid transportation velocity was analyzed, The calculated results can applied to the design and manufacture of aircrafts, the fuel supply pipes of the rocket engines, as well as the water pipes of turbine machine.

关 键 词：输送流体管道 固液耦合振动 临界速度 固有频率 有限元法 

分 类 号：U173.91[交通运输工程] O353.1[理学—流体力学]