提出了一种分析输液曲管临界流速的方法 .与其它方法相比 ,该方法不但容易处理带任意多个中间支承和变刚度、变曲率的输液曲管问题 ,而且由于对各段位移、内力关系导出了一系列显式 ,故不管离散段数多少 ,最终都只需解一个三阶矩阵方程 ,因此计算量小、精度高 A method of analyzing the critical flow velocity of the inflow curved tube is proposed.Compared with other methods, this method not only can easily deal with the problem of the inflexion curved tube with any number of intermediate supports and variable stiffness and curvature, The relationship leads to a series of explicit expressions, so regardless of the number of discrete segments, only a third-order matrix equation needs to be solved eventually, so the calculation is small and the precision is high