円周方向に周期的な波を有する円筒の軸圧潰特性

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タイトル別名
  • Axial Crushing Characteristics of Circular Tubes with Radial Corrugation
  • エンシュウ ホウコウ ニ シュウキテキナ ナミ オ ユウスル エントウ ノ ジクアツカイ トクセイ

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In this paper, effects of radial corrugation on crushing behaviors of circular tube are studied by using finite element method. The numerical analysis is carried out on two geometrically different types of corrugations, i.e. “Radial Corrugated Tube (RCT)” and “Radial Corrugated Tube with Corner (RCTC)”. In order to compare crushing behaviors with those of corrugated circular tubes, a simply circular tube (CT) is also analyzed. It is revealed that, in the crushing process, the crushing mode of RCT becomes more unstable than one of CT since the wavelength of fold becomes long, and the fold concentrates to the center of wavelength. However, when the length and the diameter of tubes set to be same levels, RCT demonstrates good energy absorption characteristics. Further, it is showed that the compressive load and the load efficiency of RCTC increase by the effect of corner part.

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