传输高速、高压液体导管可靠性研究近来愈来愈被重视。因这些导管工作的正常与否将直接影响到整个系统的可靠性,导管问题不仅在于空间走向曲折、边界条件复杂,而且一旦发生振动,将产生固液耦合现象。本文用有限元法不仅考虑了通常的惯性力,而且还考虑了哥氏惯性力和附加动压力,并在计算中采用状态向量、小范围降阶求逆等方法求出流速,压力对系统特性的影响,得出了一些与实际相符的结论。 Transmission high-speed, high-pressure liquid conduit reliability research has been more and more attention. Because the normal operation of these conduits will directly affect the reliability of the whole system, the problems of ducts not only lie in the twists and turns of the space but also the complicated boundary conditions. Once the vibration occurs, the coupling of solid and liquid will occur. In this paper, the finite element method not only considers the usual inertial force, but also considers the Coriolis inertia force and the additional dynamic pressure, and uses the state vector, the small-scale inversion order inversion and other methods to calculate the flow velocity and pressure on the system characteristics Came to some conclusion that is consistent with reality.