组合加肋旋转壳应力和稳定性分析的Riccati传递矩阵法

运用Riccati传递矩阵法,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)。利用所编制的程序对组合加肋旋转壳算例进行了应力和稳定性分析,并将计算结果与理论计算结果、试验结果或MSC/NASTRAN的计算结果进行比较,表明所编制的程序正确可信、计算速度快、精度高。

STRESS AND STABILITY ANALYSIS OF RING-STIFFENED JOINED REVOLUTIONARY SHELL USING RICCATI TRANSFER MATRIX METHOD

By using Riccati transfer matrix method, the field-transfer matrix of the revolutionary shell element is set up. The point-transfer matrix of the node is derived, where a rib exists or the slope of generatrix is discontinuous, and the possible distortions of the rib are considered in the derivation. The computer programs for analyzing the static stress and stability of the ring-stiffened revolutionary shell are developed (program for stress-SAPRi, program for stability-BAPRi). By using SAPRi and BAPRi, static stress and stability analysis are carried out on some examples of ring-stiffened revolutionary shell. Comparisons between the calculation results and the theoretical results and the experimental results as well as the results by software MSC/NASTRAN show that the developed programs are accurate and the time of calculation is reduced.