Riccati传递矩阵法在潜艇结构强度和稳定性分析中的应用

运用Riccati传递矩阵方法,建立了旋转壳单元的场传递矩阵,推导了肋骨和母线倾角不连续位置的点传递矩阵,在推导中考虑了肋骨各方向可能的变形,编制了用于分析组合加肋旋转壳应力和稳定性的计算机程序(应力程序SAPRi,稳定性程序BAPRi)。利用SAPRi程序和BAPRi程序对潜艇耐压结构的典型结构算例进行了应力和稳定性分析,并将计算结果与理论结果或商用软件(MSC/NASTRAN)的计算结果进行比较,表明该程序结果正确可信,计算速度快,适合于工程应用。

Application of Riccati transfer matrix method to the analysis of strength and stability of submarine structure

By using Riccati transfer matrix method,the field transfer matrix of the shell element of revolution is set up.The point transfer matrix of the node is derived,where a rib exists or the slope of generatrix is discontinuous.In the course of derivation,the possible distortions of the rib are considered.The computer programs for analyzing the stress and stability of ring-stiffened combined shell of revolution are developed(program for stress-SAPRi,program for stability-BAPRi).By using SAPRi and BAPRi,the stress and stability analysis is carried out to some typical structure examples of the pressure hull of submarine.By comparing the calculated results with the theoretical results and commercial software(MSC/NASTRAN),it can be concluded that the results of the programs are accurate and the programs are suitable for application to engineering.