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首页> 外文期刊>The HKIE Transactions >Cascading collapse of honeycomb columns under compression along the long axis
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Cascading collapse of honeycomb columns under compression along the long axis

机译：蜂窝柱在长轴压缩下的级联坍塌

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摘要

Axial compression tests were performed on columns with a low-density honeycomb structure made of gluing drinking straws together. Columns with slenderness ratios higher than about 7 failed by global buckling, and those with smaller slenderness ratios failed by a peculiar plastic deformation mode in which the low-density structure collapsed successively one layer following another with a rather constant periodicity, beginning from one end of the column. A theoretical model is proposed to describe the onset of the cascading collapse based on energetic considerations, and this explains the observed Young's modulus, periodicity of the collapse and the yield strength in a self-consistent way.
机译：在具有低密度蜂窝结构的圆柱上进行了轴向压缩测试，该蜂窝结构是通过将吸管粘在一起制成的。细长比大于约7的柱因整体屈曲而失效，细长比小于的柱因特有的塑性变形模式而失效，在该塑性变形模式中，低密度结构以相当恒定的周期从另一端开始依次逐层塌陷。列。提出了一种基于能量的考虑来描述级联坍塌发生的理论模型，这以自洽的方式解释了观察到的杨氏模量，坍塌的周期性和屈服强度。

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