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根据梁 -柱单元非线性有限元理论 ,采用弧长法与修正Newton -Raphson法相结合的迭代法 ,编制了网壳结构几何非线性分析程序 ,对不同矢跨比下单层网壳和局部双层网壳的静力稳定性能进行分析比较。所得结果可为类似结构设计提供依据
According to the nonlinear finite element theory of beam-column elements, the geometric nonlinearity analysis program of reticulated shell structure was developed by using the iterative method of arc-length method and modified Newton-Raphson method. The static stability of the reticulated shell is analyzed and compared. The results obtained provide a basis for similar structural design