通过线性化假设，并进行Ｌａｐｌａｃｅ变换，导出了流体的流量、压力与管道的应力及位移之间的网络模型，通过求解特征根和特征向量建立起其传递矩阵，在该模型的建立中，首次考虑了频率相关摩擦项的影响，对仿真精度有较大的提高。另外在空间管的节点耦合中，给出了两次坐标变换的方法，解决了空间管道的通用耦合算法，甚至可用于空间曲线管路的近似计算。大量的试验结果与仿真结果的比较证明了该方法的正确性。 Through the assumption of linearization and Laplace transform, the network model of fluid flow, pressure and pipe stress and displacement is deduced. The transfer matrix is ​​established by solving the eigenvalues ​​and eigenvectors. For the first time, Considering the influence of frequency-dependent friction term, the simulation accuracy is greatly improved. In addition, in the node coupling of space tube, a method of two coordinate transformations is given, which solves the general coupling algorithm of space pipelines and can even be used in approximate calculation of space curve pipelines. A large number of experimental results and simulation results show that the method is correct.