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Effect of hardening laws and yield function types on spring-back simulations of dual-phase steel automotive sheets

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Abstract

In order to simulate the spring-back of DP-steel automotive sheets, the effect of hardening laws and yield function types has been studied based on finite element simulations performed for 2-D draw bending and S-rail tests. Specifically, the performance of the combined isotropic-kinematic hardening based on the modified Chaboche model was compared with those of the pure isotropic hardening and kinematic hardening laws, along with the non-quadratic anisotropic yield (Yld2000-2d) and Mises yield functions. As for the 2-D draw bending test, numerical results were compared with experimental results for verification purposes.

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Authors and Affiliations

  1. School of Material Science and Engineering, Seoul National University, 56-1, Shinlim-dng, Gwanak-gu, 151-742, Seoul, Korea

    Junehyung Kim, Wonoh Lee, Jinhak Kong & Kwansoo Chung

  2. Research & Development Division for Hyundai Motor Company & Kia Motors Corporation, 772-1, Jangduk-dong, Whasung-si, 445-706, Gyunggi-do, Korea

    Daeyong Kim

  3. Materials and Process Lab., R&D Center & NAO Planning General Motors, 48090-9055, Warren, MI, USA

    Chongmin Kim

  4. Manufacturing Systems Research Lab., R&D Center & NAO Planning General Motors, 48090-9055, Warren, MI, USA

    Michael L. Wenner

Authors
  1. Junehyung Kim
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  2. Wonoh Lee
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  3. Daeyong Kim
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  4. Jinhak Kong
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  5. Chongmin Kim
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  6. Michael L. Wenner
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  7. Kwansoo Chung
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Correspondence to Kwansoo Chung.

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Kim, J., Lee, W., Kim, D. et al. Effect of hardening laws and yield function types on spring-back simulations of dual-phase steel automotive sheets. Met. Mater. Int. 12, 293–305 (2006). https://doi.org/10.1007/BF03027546

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  • DOI: https://doi.org/10.1007/BF03027546

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