Some double bottom structures with imperfection are analysed by nonlinear fem , and compared with ideal structure 本文还对部分骨材开裂的双层底板架进行了非线性有限元分析，得出不同开裂情况下板架的临界载荷。
4 . analyzing the rule of stress and strain about the geomembrane with damnification in factual engineering with three - dimension non - liner fem 4 、应用三维非线性有限元分析了土工膜损伤后在实际运行中的应力应变变化规律及影响大小。
Analysis of nonlinear finite - element for ultimate strength of gusset plate connections to slotted tubes with ansys program are carried out in this dissertation 本文采用通用有限元程序ansys对管板节点进行了非线性有限元分析研究。
In this paper non - lineal 3 dimensions concrete structural temperature field and stres ; field is simulated during pouring by using finite element method 本文对混凝土结构浇筑过程的温度场和应力场进行了三维非线性有限元分析与计算。
Several works are included in the second part . first , the four - node degenerated shell element is adopted to simulate the nonlinear structural behavior 在论文的第二部分，笔者进行了混凝土板、壳及箱型结构非线性有限元分析的研究。
Analysis ofnonlinear finite - element for ultimate tensile strength of gusset plate connections toslotted tubes with ansys program are carried out in this dissertation 本文采用通用有限元程序ansys对管板节点进行非线性有限元分析研究。
Second , to study the whole - process behavior of the concrete structure , the arc - length method is introduced in the nonlinear analysis program 目前，国内外对于将弧长法用于结构的几何非线性有限元分析开展了深人广泛的研究，并取得了满意的成果。
We will introduce nonlinear initial method , stress density method and dynamic relaxation method which are the most popular methods in our country 该文介绍的非线性有限元分析方法，力密度法以及动力松弛法都是国内外较为常用的张拉膜结构设计方法。
5 ) the nonlinear fem analysis is carried on the dam . in this process , bayes inversion values are selected . the fem results are consistent with the observation data 对坝体进行非线性有限元分析，沥青混凝土参数选择bayes随机反演值，有限元计算结果同大坝施工观测结果相一致。
A full - scale experimental study and associated nonlinear finite element analysiswere undertaken to study the ultimate tensile strength of gusset plate connections toslotted tubes in this dissertation 本文研究的主要内容包括管板节点受拉极限承载力非线性有限元分析和足尺试验研究两部分。
