خرد شدن سازه هاي هاني كمب فلزي تحت بارهاي شبه استاتيكي

Crushing Of Metallic HonyComb Structures Under Quasi-Static Loading

Honeycombs are used in many industries due to their individual properties such as energy absorption property. in this paper the "angle element" is introduced and its energy dissipation mechanisms under quasi-static loading is studied. The crushing load of honeycomb is calculated by energy method and describing Wierzbicki model for determining the mean crushing strength and half wavelength of folding of cell walls, a new model is presented which predicts better results than the Wierzbicki model. Based on this analysis the cell geometry has important role on mechanical behaviour of honeycomb structures; so that decreasing the cell size increases the mean crushing strength and decreases the half wavelength of folding. On the other hand increasing the cell wall thickness increases these two parameters. The results of the new model is in good agreement with available experimental data.