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Metals and Materials International

, Volume 15, Issue 4, pp 637–647 | Cite as

Springback prediction of TWIP automotive sheets

  • Kanghwan Ahn
  • Donghoon Yoo
  • Min Hong Seo
  • Sung-Ho Park
  • Kwansoo Chung
Article

Abstract

In an effort to reduce the weight of vehicles, automotive companies are replacing conventional steel parts with light weight alloys and/or with advanced high strength steels (AHSS) such as dual-phase (DP), twinning induced plasticity (TWIP), and transformation induced plasticity (TRIP) steels. The main objective of this work is to experimentally and numerically evaluate the macro-performance of the automotive TWIP sheet in conjunction with springback. In order to characterize the mechanical properties, simple tension and tension-compression tests were performed to determine anisotropic properties, as well as the Bauschinger, transient, and permanent softening behaviors during reverse loading. For numerical simulations, the anisotropic yield function Yld2000-2d was utilized along with the combined isotropic-kinematic hardening law based on the modified Chaboche model. Springback verification was performed for the unconstrained cylindrical bending and 2D draw bending tests.

Keywords

TWIP steel metal forming AHSS spring-back permanent softening 

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References

  1. 1.
    V. H. Schumann, Neue Hutte 17, 605 (1972).Google Scholar
  2. 2.
    O. Grassel, L. Kruger, G. Frommeyer, and L. W. Meyer, Int. J. Plasticity 16, 1391 (2000).CrossRefGoogle Scholar
  3. 3.
    J. K. Jung, O. Y. Lee, Y. K. Park, D. E. Kim, K. G. Jin, S. K. Kim, and K. H. Song, J. Kor. Inst. Met. & Mater. 46, 627 (2008).Google Scholar
  4. 4.
    M. G. Lee, D. Kim, C. Kim, M. L. Wenner, and K. Chung, Int. J. Plasticity 21, 915 (2005).zbMATHCrossRefGoogle Scholar
  5. 5.
    S. Xu, K. Zhao, T. Lanker, J. Zhang, and C. T. Wang, SAE International 2007-01-1687 (2007).Google Scholar
  6. 6.
    T. Kawaguchi, S. Imatani, and K. Yamaguchi, J. JSTP 35, 125 (1994).Google Scholar
  7. 7.
    K. Mattiasson, P. Thilderkvist, A. Strange, and A. Samuelsson, Proc. NUMIFORM’95 (eds. S. Shen, P. R. Dawson), p. 115 (1995).Google Scholar
  8. 8.
    N. He and R. H. Wagoner, Proc. NUMISHEET’96 (eds. J. K. Lee, G. L. Kinzel and R. H. Wagoner), p. 308 (1996).Google Scholar
  9. 9.
    F. Pourboghrat and E. Chu, Int. J. Mech. Sci. 36, 327 (1996).Google Scholar
  10. 10.
    F. Pourboghrat, K. Chung, and O. Richmond, J. Appl. Mech. ASME 65, 671 (1998).CrossRefGoogle Scholar
  11. 11.
    J. W. Yoon, F. Pourboghrat, K. Chung, and D. Yang, Int. J. Mech. Sci. 44, 2133 (2002).zbMATHCrossRefGoogle Scholar
  12. 12.
    W. Prager, J. Appl. Mech. ASME 23, 493 (1956).zbMATHMathSciNetGoogle Scholar
  13. 13.
    H. Zigler, Quart. Appl. Math. 17, 55 (1959).MathSciNetGoogle Scholar
  14. 14.
    J. L. Chaboche, Int. J. Plasticity 2, 149 (1986).zbMATHCrossRefGoogle Scholar
  15. 15.
    J. L. Chaboche, Int. J. Plasticity 7, 661 (1991).CrossRefGoogle Scholar
  16. 16.
    K. S. Chung, M. G. Lee, D. Kim, C. Kim, M. L. Wenner, and F. Barlat, Int. J. Plasticity 21, 861 (2005).zbMATHGoogle Scholar
  17. 17.
    J. Kim, W. Lee, D. Kim, J. Kong, C. Kim, M. L. Wenner, and K. S. Chung, Met. Mater. Int. 12, 293 (2006).CrossRefGoogle Scholar
  18. 18.
    K. S. Chung, D. Kim, W. Lee, J. Kim, K. H. Chung, C. Kim, K. Okamoto, and R. H. Wagoner, Int. J. Solids Structures (2009).Google Scholar
  19. 19.
    F. Barlat, J. C. Brem, J. W. Yoon, K. Chung, R. E. Dick, S.-H. Choi, F. Pourboghrat, E. Chu, and D. J. Lege, Int. J. Plasticity 19, 1297 (2003).zbMATHCrossRefGoogle Scholar
  20. 20.
    M. G. Lee, D. Kim, C. Kim, M. L. Wenner, R. H. Wagoner, and K. S. Chung, Int. J. Plasticity 21, 883 (2005).zbMATHGoogle Scholar
  21. 21.
    L. Xu and F. Barlat, Proc. ICTP 2008 (eds. D.Y. Yang, Y.H. Kim, C.H. Park), p. 867 (2008).Google Scholar
  22. 22.
    S. W. Lee and D. Y. Yang, J. Mater. Proc. Technol. 80–81, 60 (1998).CrossRefGoogle Scholar
  23. 23.
    ABAQUS User’s manual (version 6.5), Hibbit, Karlsson & Sorensen Inc., USA (2005).Google Scholar

Copyright information

© The Korean Institute of Metals and Materials and Springer Netherlands 2009

Authors and Affiliations

  • Kanghwan Ahn
    • 1
  • Donghoon Yoo
    • 1
  • Min Hong Seo
    • 2
  • Sung-Ho Park
    • 2
  • Kwansoo Chung
    • 1
  1. 1.Department of Materials Science and Engineering, Intelligent Textile System Research CenterSeoul National UniversitySeoulKorea
  2. 2.POSCO Technical Research LaboratoriesJeonnamKorea

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