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首页> 外文会议>Structural Stability Research Council 2002 Annual Stability Conference; Apr 24-27, 2002; Seattle, Washington >INTERACTION BUCKLING OF STIFFENED STEEL PLATES
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INTERACTION BUCKLING OF STIFFENED STEEL PLATES

机译：加筋钢板的相互作用屈曲

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摘要

The modes of failure of tee shape stiffened steel plates have been widely recognized to be: overall buckling, plate buckling, and stiffener tripping. Although the first two modes of failure show a stable post-buckling behavior, stiffener tripping shows a sudden loss of capacity when it occurs. A recent investigation of this failure mode over a wide range of material and geometric properties has revealed that a mode of failure that is equally undesirable as stiffener tripping consists of a combination of plate buckling followed by overall buckling. Although these two buckling modes show a very stable post-buckling behavior when occurring individually, the interaction between the two modes was found to lead to a drastic change in post-buckling behavior. The stable behavior makes way to a sudden loss of capacity when overall buckling follows plate buckling. A recent experimental investigation on interaction buckling of steel plates stiffened with tee stiffeners was conducted on four large-scale stiffened steel plates dimensioned to fail in an interaction buckling mode. The main objective of the experimental investigation was to confirm that this mode of failure exists and can be predicted reliably using finite element analysis. The experimental program included the testing of four large-scale test specimens, material properties determination, initial imperfection and residual stresses measurements.
机译：三通形加劲钢板的失效模式已被广泛认为是：整体屈曲，板屈曲和加劲肋跳闸。尽管前两种破坏模式显示出稳定的屈曲后行为，但加劲肋跳闸显示出其发生容量突然损失。最近在广泛的材料和几何特性上对该破坏模式进行的研究表明，与加劲肋跳闸同样不希望发生的破坏模式包括板屈曲和整体屈曲的组合。尽管这两种屈曲模式在单独发生时显示出非常稳定的后屈曲行为，但发现这两种模式之间的相互作用会导致后屈曲行为发生急剧变化。当整体屈曲发生在板屈曲之后，稳定的行为将导致突然的容量损失。最近对三通加劲肋加强的钢板的相互作用屈曲的实验研究是在四个大型的加强钢板上进行的，这些尺寸被确定为在相互作用屈曲模式下失效。实验研究的主要目的是确认这种失效模式存在并且可以使用有限元分析可靠地预测。实验程序包括对四个大型试样的测试，材料性能的确定，初始缺陷和残余应力的测量。

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