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An Evaluation method for plastic buckling of cantilever type pipes controlled by displacement loads, 1; Proposal of the estimation method and the criterion

変位制御型応力下における配管の塑性座屈評価法,1; クライテリオンと評価法の提案

安藤 勝訓; 手塚 泰治*; 中村 敏夫*; 大川 智宏*; 江沼 康弘*; 川崎 信史; 月森 和之

Ando, Masanori; Tezuka, Taiji*; Nakamura, Toshio*; Okawa, Tomohiro*; Enuma, Yasuhiro*; Kawasaki, Nobuchika; Tsukimori, Kazuyuki

Estimation method of the buckling criterion of cantilever type pipes subjected to lateral displacements is proposed. We define the criterion of the deformation controlled buckling based on bending strain at buckling portion. Then finite element method is used to estimate the displacement and bending strain at local buckling portion on the displacement controlled buckling. All of the finite element analysis are carried out by using the material properties of Mod.9Cr-1Mo and 316FR. As the result, an equation which represents the limitation for displacement controlled buckling of cantilever type pipes is proposed.

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