アルミニウムハニカムの面内変形機構におけるひずみ速度の影響と２‐スケールひずみの関係

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  • The Effect of Strain Rate and the Relationship between Two-scale Strains in In-Plane Deformation Characteristics of Aluminum Honeycombs
  • アルミニウム ハニカム ノ メンナイ ヘンケイ キコウ ニ オケル ヒズミ ソクド ノ エイキョウ ト 2 スケール ヒズミ ノ カンケイ

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The in-plane static and impact compression phenomena of aluminum honeycombs were experimentally investigated. Particularly, the effect of strain rate on the deformation of honeycomb was studied. Also, by defining a “cell-scale strain” and a “macro-scale strain” in the present paper, the relationship between them in the deformation process of individual cells and that of the entire honeycomb was investigated. As a result, it was found that the strain rate affected the position of a localized condensation and the plastic collapse mode of cells and the cell-scale strain and macroscale strain showed different behaviors in the honeycombs. Moreover, the critical impact velocity for the transition of collapse modes was estimated.

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