膜破壊を伴う衝撃吸収軽量セル構造材の設計・開発

概要

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The effect of honeycomb cell structure with thin film subjected to an axial impact force is studied by FEM, and a quatitative comparison between numerical estimates and experimental results are made and discussed. Numerical simulation shows that for enhancing the energy absorption capability, causing plastic crush of honeycomb cell and penetration of aluminum films simultaneously can be preferable than thickening the cell wall or reducing the size of honeycomb cell. Moreover, reducing the impact force (peak load) technique for honeycomb cell structure is developed and applied to the axial crushing of honeycomb cell structure with thin film ruptures. Based on the numerical results, the experiments on the collapse of honeycomb cell structure with thin film have been carried out under dynamic condition, and it is found that the numerical results agreed well for impact energy absorbed amount and crushing mode.
2006-11-25