②Non-linear stability analysis: The geometric and double nonlinear iterative calculation is carried out on the base of initial disfigurement of first buckling mode and sliding deformation under wind load.
②非线性稳定分析:分别以一阶特征值屈曲模态、假想水平荷载初始构形和风荷载作用侧移为初始缺陷进行了几何非线性和双重非线性迭代计算。
参考来源 - 大型火电厂锅炉钢结构静力及稳定性分析This paper introduces a method of dual nonlinear spline finite element methodon the basis of previous research on the steel structure earthquake resistance, deducesits shape function and element stiffness matrices etc.
本文在前人对钢结构抗震研究的基础上，提出双重非线性分片样条有限元法，对其形函数，单元刚度方程等进行了理论推导，将混合强化本构关系引入该有限元中，并研制开发了相应的有限元程序。
参考来源 - 双重非线性样条有限元在分析循环荷载作用下薄壁钢构件性能中的应用Based on stability theory and nonlinear finite element (FE) method, ANSYS finite element models (FEM) are presented, where shell 181 is adopted and geometric and material nonlinear is taken into account, as well as initial geometric imperfection.
基于稳定理论和双重非线性有限元方法,以ANSYS软件为工作平台,本文采用Shell181板壳单元建立了变截面门式刚架的有限元分析模型,该模型可以方便考虑初始几何缺陷的影响。
参考来源 - 考虑局部屈曲的变截面门式刚架结构的整体性能Based on the former research works and the program dealing with thedual-nonlinearity of CFST arch subjected to in-plane load developed by FuzhouUniversity, a method of dual non-linearity FE method and program to analyze CFSTarch under spatial loads has brought forward.
在前述研究和福州大学钢管混凝土拱面内双重非线性分析程序的基础上，本文提出了空间受力分析的双重非线性有限元方法，并改编了相应的程序。
参考来源 - 钢管混凝土（单圆管）单肋拱空间受力研究The ultimate bearing capacity of Dong Ping continuous steel truss arch bridge has been analyzed by using three different ways, which are elastic, non-linear geometry, double nonlinear methods.
分别采用线弹性、几何非线性、双重非线性三种不同的方法分析东平水道连续钢桁拱桥的极限承载力。
参考来源 - 三主桁连续钢桁拱桥静力特性及稳定极限承载力研究Dual none-linearity finite element method is used to analysis the whole behavior and ultimate load-carrying capacity in plane of Dongguan Shuidao Bridge.
采用双重非线性方法,分析了东莞水道特大桥结构受力全过程和面内极限承载力。
参考来源 - 飞鸟式钢管混凝土拱桥受力特性研究·2,447,543篇论文数据，部分数据来源于NoteExpress
应用所编制的程序，进行了平板、曲壳以及板式门架的双重非线性屈曲分析。
Using the correlative program, buckling analysis was made with plates, shells and portal frame made of plates.
采用双重非线性方法，分析了东莞水道特大桥结构受力全过程和面内极限承载力。
Dual none-linearity finite element method is used to analysis the whole behavior and ultimate load-carrying capacity in plane of Dongguan Shuidao Bridge.
通过几何、材料双重非线性分析，讨论主要几何参数对结构弹塑性受力性能的影响。
Geometrically and materially nonlinear analyses (GMNA) were carried out to analyze the effects of several geometric parameters on the elastic-plastic behavior of the structure.
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