Minimizing wrinkling formation of GPa-grade steels in multi-stage crash forming process

  • Chanhee Won
  • Dongjin Kim
  • Jonghun YoonEmail author


This paper newly proposes a strategy for constructing the multi-stage forming procedures to minimize the wrinkling formation with GPa-grade steels in the crash forming. Although the optimum design variables were adopted in the conventional crash forming, it is not possible to control the wrinkling formation in severe cases. In the multi-stage crash forming, the safe forming window against the wrinkling formation for the pre-stage forming has been constructed with numerical simulations representing the effects of design variables such as die radius, die angle, step height variations, and flange lengths. It does not only substantially reduce the area fraction of the wrinkling formation, but also recommend the other optimum design variables by interpreting the safe forming window. Experimental validations were carried out by applying the design variables suggested by the safe forming window for the multi-stage forming, which is compared with the conventional crash forming with TRIP1180 steel sheet.


Crash forming GPa-grade steels Wrinkling Wrinkling criterion Multi-stage crash forming 


Funding information

Author Prof. Jonghun Yoon has received research funding from the Materials Forming Research Group, POSCO, and “Human Resources Program in Energy Technology” of the Korean Institute of Energy Technology Evaluation and Planning (KETEP), granted by the Ministry of Trade, Industry & Energy, Republic of Korea (no. 20174010201310).

The authors declare that they have no conflicts of interest.


  1. 1.
    Won C, Lee S, Seo J, Park SH, Yoon J (2018) Stripping failure of punching pin in GPa-grade steels. Int J Adv Manuf Technol 94:73–83CrossRefGoogle Scholar
  2. 2.
    Kim K, Song Y, Yang W, Choi H, Park SH, Yoon J (2019) Partial strengthening method for cold stamped B-pillar with minimal shape change. Int J Adv Manuf Technol 102:4241–4255CrossRefGoogle Scholar
  3. 3.
    Choi H-S, Kim B-M, Ko D-C (2014) Effect of clearance and inclined angle on sheared edge and tool failure in trimming of DP980 sheet. J Mech Sci Technol 28:2319–2328CrossRefGoogle Scholar
  4. 4.
    Chen XM, Shi MF, Chen G, Kamura M, Watanabe K, Omiya Y (2005) Crash performances of advanced high strength steels of DP780, TRIP780 and DP980. SAE Technical Paper 2005-01-0354.
  5. 5.
    Sohn SS, Song H, Jo MC, Song T, Kim HS, Lee S (2017) Novel 1.5GPa-strength with 50%-ductility by transformation-induced plasticity of non-recrystallized austenite in duplex steels. Sci Rep 7:1255CrossRefGoogle Scholar
  6. 6.
    Hwang I, Yun H, Kim D, Kang M, Kim Y-M (2018) Gas metal arc weldability of 1.5 GPa grade martensitic steels. Met Mater Int 24:149–156CrossRefGoogle Scholar
  7. 7.
    Pereira MP, Yan W, Rolfe BF (2008) Contact pressure evolution and its relation to wear in sheet metal forming. Wear 265:687–1699CrossRefGoogle Scholar
  8. 8.
    Choi S, Kim K, Lee J, Park SH, Lee HJ, Yoon J (2019) Image processing algorithm for real-time crack inspection in hole expansion test. Int J Precis Eng Manuf 20:1139–1148CrossRefGoogle Scholar
  9. 9.
    Chen P, Koc M (2007) Simulation of springback variation in forming of advanced high strength steels. J Mater Process Technol 190:189–198CrossRefGoogle Scholar
  10. 10.
    Cora ÖN, Namiki K, Koç M (2009) Wear performance assessment of alternative stamping die materials utilizing a novel test system. Wear 267:1123–1129CrossRefGoogle Scholar
  11. 11.
    Won C, Kim H-G, Song Y, Chung G, Lee S, Yoon J (2018) Abrasive wear in punching pin with cryogenic treatment for GPa-grade steels. Int J Precis Eng Manuf 19:1179–1816CrossRefGoogle Scholar
  12. 12.
    Yoshida T, Katayama T, Hashimoto K, Kuriyama Y (2003) Shape control techniques for high strength steel in sheet metal forming. Nippon Steel Technical Report 88:27–32Google Scholar
  13. 13.
    Yoshida T, Isogai E, Sato K, Hashimoto K (2013) Springback problems in forming of high-strength steel sheets and counter measures. Nippon Steel Technical Report 103:4–10Google Scholar
  14. 14.
    Bobade SS, Badgujar TY (2017) Design analysis of a cross member panel for eliminating a wrinkling. Int J Eng Res Tech 6:358–361Google Scholar
  15. 15.
    Won C, Kim H-G, Lee S, Kim D, Park SH, Yoon J (2019) Wrinkling prediction for GPa-grade steels in sheet metal forming process. Int J Adv Manuf Technol 102:3849–3863CrossRefGoogle Scholar
  16. 16.
    Connie Yao Z (2011) Die wear evaluation for stamping TRIP700 and DP980 B-Pillar, SAE Int. 2011-01-0038.
  17. 17.
    Meng B, Wan M, Wu X, Yuan S, Xu X, Liu J (2014) Inner wrinkling control in hydrodynamic deep drawing of an irregular surface part using drawbeads. Chin J Aeronaut 27:697–707CrossRefGoogle Scholar
  18. 18.
    Wei L, Yuying Y (2008) Multi-objective optimization of sheet metal forming process using Pareto-based genetic algorithm. J Mater Process Technol 208:499–506CrossRefGoogle Scholar
  19. 19.
    Shimid K (2011) Evaluation of DP780 and DP980 for B-Pillars, Autosteel Seminar. Accessed 2 Feb 2019
  20. 20.
    Z-q L, Wang W, Chen G-l (2007) A new strategy to optimize variable blank holder force towards improving the forming limits of aluminum sheet metal forming. J Mater Process Technol 183:339–346CrossRefGoogle Scholar
  21. 21.
    Shi X, Chen J, Peng Y, Ruan X (2004) A new approach of die shape optimization for sheet metal forming processes. J Mater Process Technol 152:35–42CrossRefGoogle Scholar
  22. 22.
    Chen L, Chen H, Wang Q, Li Z (2015) Studies on wrinkling and control method in rubber forming using aluminium sheet shrink flanging process. Mater Des 65:505–510CrossRefGoogle Scholar
  23. 23.
    Hamedon Z, Abe Y, Mori K (2016) Improvement of formability of high strength steel sheets in shrink flanging. IOP Conference Series: Mater Sci Eng 114:012001.CrossRefGoogle Scholar
  24. 24.
    AutoForm R7.0.2 Software Manual, AutoForm Engineering GmbH, February 28, 2017.Google Scholar
  25. 25.
    Dr. -ing, Dr. h.c., Mathias Liewald MBA (2016) Use of forming simulation in modelling and process development of sheet metal forming processes, 14th German LS-DYNA Forum, Bamberg, Germany. October 10–12Google Scholar
  26. 26.
    Hill R (1948) A theory of the yielding and plastic flow of anisotropic metals. Proc Roy Soc 193:281–297MathSciNetCrossRefGoogle Scholar
  27. 27.
    Taguchi G, Konishi S (1987) Taguchi Methods, Orthogonal Arrays and Linear Graphs, Tools for Quality Engineering, American Supplier Institute, Inc. Center for Taguchi Methods, ASI Press, Allen Park, Michigan, p. 36Google Scholar
  28. 28.
    Nawaz Y, Maqsood S, Naeem K (2018) Effect of input parameters of wire electric discharge machining on surface integrity of DC53 die steel. In 2018 International Conference on Power Generation Systems and Renewable Energy Technologies (PGSRET) IEEE:1-6,
  29. 29.
    Hasçalık A, Çaydaş U (2008) Optimization of turning parameters for surface roughness and tool life based on the Taguchi method. Int J Adv Manuf Technol 38:896–903CrossRefGoogle Scholar

Copyright information

© Springer-Verlag London Ltd., part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Mechanical Design EngineeringHanyang UniversitySeoulRepublic of Korea
  2. 2.Materials Forming Research GroupPOSCO Global R&D CenterIncheonRepublic of Korea
  3. 3.Department of Mechanical EngineeringHanyang UniversityAnsan-siRepublic of Korea

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