In order to research the buckling process of three-dimensional trusses, the eigenvalue buckling analysis and non-linear flection analysis are carried out.
对立体桁架进行了特征值屈曲分析和非线性屈曲分析，研究其屈曲过程。
Throgh eigenvalue buckling analyses, the stability of the through steel-box tie-bar arch-bridge is analyzed.
根据特征值屈曲分析方法，对某下承式钢箱系杆拱桥的稳定性进行分析计算。
The second part describes the basic concept of buckling, the theory of linear eigenvalue buckling and the characteristics of nonlinear buckling.
第二部分介绍了屈曲的基本概念，线性特征值屈曲的屈曲理论以及非线性特征值屈曲的特点。
Based on the consistent mode imperfection method, the initial defect model was determined by the least order mode of eigenvalue buckling, and the maximum displacement value.
初始缺陷的模型是根据一致缺陷模态法，按最小特征值屈曲模态分布，并控制其最大值的方法确定。
Secondly, with the first mode of eigenvalue analysis on SSRS as the initial disfigurement, nonlinear buckling loads are obtained by nonlinear buckling analysis.
采用弹塑性有限元法，结合非线性屈曲理论，分析了受初始几何缺陷影响的管线钢管在内压作用下的非线性屈曲。
Eigenvalue buckling analysis is the main method of structural stability because of its computational efficiency.
由于计算效率较高，特征值屈曲分析是目前分析结构稳定性的主要方法。
Eigenvalue buckling analysis is the main method of structural stability because of its computational efficiency.
由于计算效率较高，特征值屈曲分析是目前分析结构稳定性的主要方法。
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