PLASTIC DEFORMATION OF A SQUARE-PORTAL FRAME SUBJECTED TO A HORIZONTAL BLAST TYPE IMPACT

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  • 水平衝撃を受ける門型ラーメンの塑性変形
  • スイヘイ ショウゲキ オ ウケル モンガタ ラーメン ノ ソセイ ヘンケイ

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Abstract

This paper presents an rigid-plastic analysis of the plastic deformations of a uniformly loaded square-portal frame subjected to the horizontal "blast type" impulsive loading. The results show that the horizontal deformation of the frame is nearly proportioned to the product of impulse I and excess-impulse I', where I=Pτ, I'=(P-P_s)τ in which P and τ denote force and time of the impulse, respectively, and P_s denotes horizontal strength of the frame.

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