Investigation of the Hot-Stamping Process for Advanced High-Strength Steel Sheet by Numerical Simulation

  • H. S. Liu
  • Z. W. Xing
  • J. Bao
  • B. Y. Song


Hot forming is a new way to manufacture complex-shaped components of advanced high-strength steel (AHSS) sheet with a minimum of spring-back. Numerical simulation is an effective way to examine the hot-forming process, particularly to determine thermal and thermo-mechanical characteristics and their dependencies on temperature, strain and strain rate. The flow behavior of the 22MnB5 AHSS is investigated through hot tensile tests. A 3D finite element (FE) model of hot-stamping process for the Open image in new window shaped part is built under the ABAQUS/Explicit environment based on the solutions of several key problems, such as treatment of contact between blank and tools, determination of material characteristics and meshing, etc. Numerical simulation is carried out to investigate the influence of blank holder force (BHF) and die gap on the hot-forming process for the Open image in new window shaped part. Numerical results show the FE model is effective in simulation of hot-forming process. Large BHF reduces the amount of spring-back and improves the contact of flange with tools while avoiding cracking of stamped part. Die gap has a considerable influence on the distribution of temperature on side walls; the larger the die gap, higher is the temperature on the sidewall of Open image in new window shaped part.


advanced high-strength steel finite element hot stamping simulation spring-back 



The authors acknowledge M.S. Sun Guiqing of Harbin Institute of Technology for his fruitful advices on the experiments of hot forming of HSS sheet metal for Open image in new window shaped parts.


  1. 1.
    K. Mori, K. Akita, Y. Abe. Springback Behavior in Bending of Ultra-High-Strength Steel Sheets Using CNC Servo Press, Int. J. Mach. Tools Manuf., 2007,47, p 321–325CrossRefGoogle Scholar
  2. 2.
    J.X. Lu, L. Wang, Production and Usage of High Strength Sheet Metal Used in Automotive Industry, Automob. Technol. Mater.. 2004, 2, p1-6. (in Chinese)Google Scholar
  3. 3.
    P. Chen, M. Koc, Simulation of Springback Variation in Forming of Advanced High Strength Steels, J. Mater. Process. Technol.., 2007,190, p 189-198CrossRefGoogle Scholar
  4. 4.
    T.B. Hilditch, J.G. Speer, D.K. Matlock, Influence of Low-Strain Deformation Characteristics of High Strength Sheet Steel on Curl and Springback in Bend-Under-Tension Tests, J. Mater. Process. Technol., 2007,182, p 84-94CrossRefGoogle Scholar
  5. 5.
    A.D. Santos, P. Teixeirab, A Study on Experimental Benchmarks and Simulation Results in Sheet Metal Forming, J. Mater. Process. Technol.., 2008,199(3), p327-336CrossRefGoogle Scholar
  6. 6.
    K. Mori, S. Maki, Y. Tanaka, Warm and Hot Stamping of Ultra High Tensile Strength Steel Sheets Using Resistance Heating, Ann. CIRP,2005,54, p209-212CrossRefADSGoogle Scholar
  7. 7.
    S.H. Choi, K.G. Chin, Prediction of Spring-Back Behavior in High Strength Low Carbon Steel Sheets. J. Mater. Process. Technol.., 2006,171, p385-392CrossRefGoogle Scholar
  8. 8.
    J. Yanagimoto, K. Oyamada, T. Nakagawa. Springback of High-Strength Steel After Hot and Warm Sheet Formings, CIRP Ann. Manuf. Technol., 2005, 54(1), p213-216CrossRefGoogle Scholar
  9. 9.
    J. Yanagimoto and K. Oyamada, Mechanism of Springback-Free Bending of High-Strength Steel Sheets Under Warm Forming Conditions, Ann. CIRP, 2007, 56(1)Google Scholar
  10. 10.
    T. Klikuma and K. Nakazima, Effect of Deforming Conditions and Mechanical Properties on the Stretch Forming Limits of Sheet, IDDRG, Tokyo 1970—Proceeding of ICSTIS, Trans. ISIJ, 1971, p 827–831Google Scholar
  11. 11.
    A. Turetta, S. Bruschi, A. Ghiotti, Investigation of 22MnB5 Formability in Hot Stamping Operations. J. Mater. Process. Technol.., 2006,177, p396-400CrossRefGoogle Scholar
  12. 12.
    Europaische Norm EN485-2Google Scholar
  13. 13.
    H. Hoffmann, C. Vogl, Determination of True Stress–Strain-Curves and Anisotropy in Tensile Test with Optical Deformation Measurement. Annals of the CIRP., 2003, 52 (1): p217–220CrossRefGoogle Scholar

Copyright information

© ASM International 2009

Authors and Affiliations

  1. 1.School of Mechatronics EngineeringHarbin Institute of TechnologyHarbinP.R. China

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