1430 Formation of Buckling Lobe by Inertia Effect in Axial Impact of Tubular Structure with Hat Cross-section

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  • 1430 ハット型断面筒状体の軸衝撃圧縮変形における慣性力を利用した変形起点の生成(S15 高エネルギー加工,21世紀地球環境革命の機械工学:人・マイクロナノ・エネルギー・環境)

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The hat cross-sectional tube was impacted to the rigid plate under the dynamic condition, which exhibited a progressive buckling pattern with multi lobe. The effect of the inertial force arising during impact on the onset of the first buckling lobe was investigated. The inertia force was induced by the solid mass attached to the tube wall. Impact experiment with the aid of drop-hammer was carried out. Experimental observation with a high-speed video camera demonstrated that the position of the first buckling lobe was successfully controlled by the inertial force.

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