Abstract
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.
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