Eigenmode-affine geometric imperfections were introduced in both GNA and GMNA of two kinds of column-supported silos to analyze the effects of imperfections on the stability behavior of the structure.

• 在两类筒仓的几何非线性分析、双重非线性分析中,均考察了以特征值模态分布的几何初始缺陷对结构稳定性能的影响。