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Local and post local buckling of stepped and perforated thin plates

机译：阶梯和穿孔薄板的局部和局部屈曲

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摘要

The nonlinear mathematical theory for initial and post local buckling analysis of plates of abruptly varying stiffness based on the principle of virtual work is established. The method is programmed, and several numerical examples are presented to demonstrate the scope and efficacy of the procedure. Local buckling coefficients of perforated and stepped plates are obtained and the results are compared with known solutions. Post-buckling behaviour of perforated and stepped plates is studied for different geometries. The non-dimensional applied loads (P/P_(cr)), dimensionless lateral displacements and stress distribution of plates with varying stiffness in the post buckling region are given in several tables and graphs.
机译：建立了基于虚功原理的刚度突变板的初始局部屈曲非线性分析理论。对该方法进行了编程，并提供了几个数值示例来证明该方法的范围和有效性。获得了穿孔板和阶梯板的局部屈曲系数，并将结果与​​已知解决方案进行了比较。针对不同的几何形状，研究了多孔板和阶梯板的屈曲后行为。在几张表格和图表中给出了无量纲的施加载荷（P / P_（cr）），屈曲后区域中刚度变化的板的无量纲横向位移和应力分布。

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