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。
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。
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。
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。
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