任意セグメント型スプライン降伏関数による穴広げ成形の解析

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タイトル別名
  • Analysis of Hole Expansion Forming Based on Arbitrary-Segments Spline Yield Function
  • ニンイ セグメントガタ スプライン コウフク カンスウ ニ ヨル アナヒロゲ セイケイ ノ カイセキ

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<p>The hole expansion behaviors of mild steel sheets were investigated by experiments and finite element simulations, using three anisotropic yield functions: Hill’48, Yld2000-2d, and Spline models. Spline yield function was expanded to allow the arbitrary segments given by experimental stresses, strains, and strain increments, which are normal vector on the yield surfaces, in the biaxial stress state. Relationships between the yield function models and prediction accuracy were examined through the comparison of thickness distributions at a certain distance from the hole edge. In this work, it was found that accurate modeling of anisotropy affected the accurate prediction of thickness. It was concluded that Spline yield function, which was given the most numbers of experimental values, is the most accurate model in this research.</p>

収録刊行物

  • 塑性と加工

    塑性と加工 60 (699), 115-120, 2019

    一般社団法人 日本塑性加工学会

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