【摘要】 根据Hamilton原理 ,用有限元法推导载流管道的固液耦合振动方程 ,用QR法计算不同边界条件下管道的临界速度和固有频率 ,用Newmark法计算了管道对阶跃载载荷的响应 .所得结果可用于火箭发动机燃料馈给管道 ,水轮机供水管道和其他管道的设计与研究更多还原

【Abstract】 The solid liquid coupling vibration equation of fluid conveying pipe is established, following the Hamilton principle and using finite element method. The critical velocity, natural frequency and dynamic response of pipes are calculated under different boundary conditions. The results can be used for design and research projects for pipes feeding fuel and water etc.更多还原