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Improving the Accuracy of Stamping Analyses Including Springback Deformations

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Abstract

An accurate prediction of sheet metal deformation including springback is one of the main issues in an efficient finite element (FE) simulation in automotive and stamping industries. Considering tooling design for newer class of high-strength steels, in particular, this requirement became an important aspect for springback compensation practices today. The sheet deformation modeling accounting Bauschinger effect is considered to be a key factor affecting the accuracy of FE simulations in this context. In this article, a rate-independent cyclic plasticity model is presented and implemented into LS-Dyna software for an accurate modeling of sheet metal deformation in stamping simulations. The proposed model uses Hill’s orthotropic yield surface in the description of yield loci of planar and transversely anisotropic sheets. The strain-hardening behavior is calculated based on an additive backstress form of the nonlinear kinematic hardening rule. The proposed model is applied in stamping simulations of a dual-phase steel automotive part, and comparisons are presented in terms of part strain and thickness distributions calculated with isotropic plasticity and the proposed model. It is observed that both models produce similar plastic strain and thickness distributions; however, there appeared to be considerable differences in computed springback deformations. Part shapes computed with both plasticity models were evaluated with surface scanning of manufactured parts. A comparison of FE computed geometries with manufactured parts proved the improved performance of proposed model over isotropic plasticity for this particular stamping application.

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References

  1. M.A. Ahmetoglu, G. Kinzel, and T. Altan, Computer Simulation for Tool and Process Design in Sheet Forming, J. Mater. Process. Technol., 1994, 46, p 421–441

    Article  Google Scholar 

  2. A.E. Tekkaya, State-of-the-Art of Simulation of Sheet Metal Forming, J. Mater. Process. Technol., 2000, 103(1), p 15–23

    Article  Google Scholar 

  3. H. Darendeliler and B. Kaftanoglu, Deformation Analysis of Deep-Drawing by a Finite Element Method, Ann. CIRP, 1991, 40(1), p 281–284

    Article  Google Scholar 

  4. M. Firat, B. Kaftanoğlu, and O. Eser, Sheet Metal Forming Analyses with an Emphasis on the Springback Deformation, J. Mater. Process. Technol., 2008, 196, p 135–148

    Article  CAS  Google Scholar 

  5. M. Firat, Computer Aided Analysis and Design of Sheet Metal Forming Processes, Part III: Die-Face Design, Mater. Des., 2007, 28(4), p 267–279

    Google Scholar 

  6. K. Mattiasson, P. Thilderkvist, A. Samuelson, and A. Strange, Simulation of Springback in Sheet Metal Forming, Simulation of Materials Processing: Theory, Methods and Applications, S.F. Shen and P.R. Dawson, Ed., A.A. Balkema, Rotterdam, 1995, p 115–124

    Google Scholar 

  7. M. Yoshida and U. Uemori, A Model of Large-Strain Cyclic Plasticity and its Application to Springback Simulation, Int. J. Mech. Sci., 2003, 45, p 1687–1702

    Article  Google Scholar 

  8. P. Van Houtte, Application of Plastic Potentials to Strain Rate Sensitive and Insensitive Anisotropic Materials, Int. J. Plast., 1994, 10, p 719–748

    Article  Google Scholar 

  9. Y. Jiang, “Cyclic Plasticity with an Emphasis on Ratcheting,” Ph.D. Dissertation, University of Illinois at Urbana-Champaign, 1993

  10. J. Gau, “A Study of the Influence of The Bauschinger Effect on the Springback in the Two-dimensional Sheet Metal Forming,” Ph.D. Dissertation, The Ohio State University, 1999

  11. L. Geng, “Application of Plastic Anisotropy and Non-isotropic Hardening to Springback Prediction,” Ph.D. Dissertation, The Ohio State University, 2000

  12. R. Hill, Constitutive Modelling of Orthotropic Plasticity in Sheet Metals, J. Mech. Phys. Solids, 1990, 38(3), p 405–417

    Article  Google Scholar 

  13. W.F. Hosford and R.M. Caddell, Metal Forming: Mechanics and Metallurgy, Prentice-Hall, Upper Saddle River, NJ, 1993

    Google Scholar 

  14. C. Vial, R.M. Caddell, and W.F. Hosford, Yield Loci of Anisotropic Sheet Metals, Int. J. Mech. Sci., 1983, 25, p 899

    Article  Google Scholar 

  15. J.C. Simo and T.J.R. Hughes, Computational Inelasticity, Springer-Verlag New York Inc., New York, 1998

    Google Scholar 

  16. J.L. Chaboche and G. Rousselier, On the Plastic and Viscoplastic Constitutive Equations, Part I: Rules Developed with Internal Variable Concept, J. Pressure Vessel Technol., 1983, 105, p 153–158

    Article  Google Scholar 

  17. ASTM Standard E8-01, Standard Test Methods for Tension Testing of Metallic Materials, ASTM International, West Conshohocken, PA, 2001

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Acknowledgments

This study was performed as a part of the research project supported by Coskunoz Holding and Turkish Scientific and Technological Research Council (TUBITAK). Authors thank to Mr. Aydin Kuntay of Bias Engineering for providing the technical material and supporting the use of the LS-Dyna in this study. Also helps of technical staff of Coskunoz-Metalform are gratefully acknowledged.

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Authors and Affiliations

  1. Department of Mechanical Engineering, The University of Sakarya, Adapazari, Turkey

    Mehmet Firat & Erdal Karadeniz

  2. Coskunöz Holding, Metalform, Bursa, Turkey

    Mustafa Yenice & Mesut Kaya

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  1. Mehmet Firat
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  2. Erdal Karadeniz
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  3. Mustafa Yenice
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  4. Mesut Kaya
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Correspondence to Mehmet Firat.

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Firat, M., Karadeniz, E., Yenice, M. et al. Improving the Accuracy of Stamping Analyses Including Springback Deformations. J. of Materi Eng and Perform 22, 332–337 (2013). https://doi.org/10.1007/s11665-012-0257-5

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  • DOI: https://doi.org/10.1007/s11665-012-0257-5

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