geometrical nonlinear finite element theory 几何非线性有限元理论
Stability analysis is carried out with prestressed spatial steel structures according nonlinear finite element theory.
基于非线性有限元原理对预应力空间钢结构进行了稳定性能分析。
The three-node beam element tangent stiffness matrix including the geometric stiffness matrix is developed according to the nonlinear finite element theory.
进而依据非线性有限元理论推导了该三结点梁单元的几何刚度矩阵的单元切线刚度矩阵；
The internal forces in tensile membrane structures were analyzed using geometrical nonlinear finite element theory using curved quadrilateral isoperimetric 8 node elements.
本文根据几何非线性有限元理论，采用8结点曲面四边形等参单元，编制了用于张力膜结构内力分析的有限元程序。
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