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A simple modeling of true stress strain curve of steel considering fracture

鋼材の大きな変形を伴う FEM 解析に適用することを目的に真応力－ひずみ関係の簡易なモデル化方法を検討した．鋼材の製品検査証（ミルシート）の降伏点，引張強さの応力値を用い，それ以外の値は材料特性値間の関係により補完したトリリニア型の応力ーひずみモデルである．破断ひずみのしきい値を用いることで材料試験の破断挙動を簡易的に再現できることを示し，規格下限値の降伏点，引張強さを参考とした真応力ーひずみ関係のモデル化方法を検討した．

Japan Society of Civil Engineers Annual Meeting

Japan Society of Civil Engineers 2021 Annual Meeting

Japan Society of Civil Engineers 2021 Annual Meeting

[I-39]A simple modeling of true stress strain curve of steel considering fracture

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