Numerical Homogenization Methods Based on Heterogeneous Microstructure in Multi-Constituent Steels

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  • Watanabe Ikumu
    Research Center for Strategic Materials, National Institute of Materials Science
  • Ueji Rintaro
    Faculty of Engineering, Kagawa University

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Other Title
  • 複合組織鋼の非均質組織に基づく力学挙動モデリング手法
  • フクゴウ ソシキコウ ノ ヒキンシツ ソシキ ニ モトズク リキガク キョドウ モデリング シュホウ

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Abstract

The purpose of this study is to present the applicability of homogenization methods based on heterogeneous microstructure in multi-constituent steels. At first, basic equations of a standard elastoplastic constitutive model and the homogenization methods have been discussed to describe nonlinear stress-strain curves of metallic materials. Here the homogenization methods have been classified into three types with the theoretical differences in concept. Numerical demonstrations for Dual-Phase steel have been performed to express the potential of these homogenization methods. The results of numerical demonstrations have indicated that a class of the numerical homogenization approaches is especially useful in both a quantitative evaluation of macroscopic material response and an investigation of microscopic mechanism in consideration of morphology of microstructure.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 98 283-289, 2012

    The Iron and Steel Institute of Japan

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