FE Simulations and Experimental Analysis of the Blade Angle Effect on Sheared Surface in Trimming Process of Advanced High-Strength Steel Sheet

  • L. KomgritEmail author
  • L. Pongsakorn
Research Article - Mechanical Engineering


In the precision manufacturing, the trimming process is the final step before sending a product to the surface finishing or painting. To increase the quality of trimmed parts from conventional to a high precision, the tool design is needed. Therefore, thorough understanding of tool design for making high-precision trimmed parts is a key to success. The aim of this paper is to discuss the interaction between the blade angle and trimmed clearance on the sheared surface of mild steel and advanced high-strength steel sheets in the trimming process on the basis of experimental and FE simulation analysis. In this study, three angles (0°, 30° and 45°) on trimmed punch combination with three levels of trimmed clearance (2, 5 and 10% of the sheet thickness) were proposed for producing high quality of the sheared surface. From experimental results of all material workpieces and trimmed clearances, the sheared surface increased with a change in the blade angle. The hydrostatic stress distribution in FE analysis revealed that the major mechanism of increasing sheared surface is the delay of crack propagation, resulting in high quality of trimmed parts.


Advanced high-strength steel sheets Sheared surface Blade angle Trimmed clearance 



This research was supported by a grant from the Rajamangala University of Technology Rattanakosin, under Grant (002/2014). The authors would like to give our gratitude to Department of Tool & Materials Engineering, King Mongkut’s University of Technology Thonburi (KMUTT) for supporting the Finite element software and Institute of Research and Development, Rajamangala University of Technology Rattanakosin.


  1. 1.
    Billur, M.S.; Altan, T.: Challenges in forming advanced high strength steels. In: Proceedings of New Developments in Sheet Metal Forming, pp. 285–304 (2010)Google Scholar
  2. 2.
    Bernert, W.; Bzdok, M.; Davis, J.; Fekete, J.; Fitzgerald, K.: Advanced high-strength steel product and process applications guidelines. Auto/steel partnership (2008)Google Scholar
  3. 3.
    Choi, H.S.; Kim, B.M.; Ko, D.C.: Effect of clearance and inclined angle on sheared edge and tool failure in trimming of DP980 sheet. J. Mech. Sci. Technol. 28(6), 2319–2328 (2014)CrossRefGoogle Scholar
  4. 4.
    Mori, K.; Maeno, T.; Fuzisaka, S.: Punching of ultra-high strength steel sheets using local resistance heating of shearing zone. J. Mater. Process. Technol. 212(2), 534–540 (2012)CrossRefGoogle Scholar
  5. 5.
    Chumrum, P.; Koga, N.; Premanond, V.: Experimental investigation of energy and punch wear in piercing of advanced high-strength steel sheet. Int. J. Adv. Manuf. Technol. 79(5–8), 1035–1042 (2015)CrossRefGoogle Scholar
  6. 6.
    Ying, C.; Shuo, H.; Xiaodong, L.; Cunyu, W.; Guojun, Z.; Han, D.: Effect of shearing clearance on formability of sheared edge of the third-generation automotive medium-Mn steel with metastable austenite. J. Mater. Process. Technol. 259, 216–227 (2018)CrossRefGoogle Scholar
  7. 7.
    Akyürek, F.; Yaman, K.; Tekiner, Z.: An experimental work on tool wear affected by die clearance and punch hardness. Arab. J. Sci. Eng. 42(11), 4683–4692 (2017)CrossRefGoogle Scholar
  8. 8.
    Choi, H.S.; Kim, B.M.; Kim, D.H.; et al.: Application of mechanical trimming to hot stamped 22MnB5 parts for energy saving. Int. J. Precis. Eng. Manuf. 15(6), 1087–1093 (2014)CrossRefGoogle Scholar
  9. 9.
    So, H.; Faßmann, D.; Golle, R.; Schaper, M.: An investigation of the blanking process of the quenchable boron alloyed steel 22MnB5 before and after hot stamping process. J. Mater. Process. Technol. 212(2), 437–449 (2012)CrossRefGoogle Scholar
  10. 10.
    Han, X.; Yang, K.; Ding, Y.; Tan, S.; Chen, J.: Numerical and experimental investigations on mechanical trimming process for hot stamped ultra-high strength parts. J. Mater. Process. Technol. 234, 158–168 (2016)CrossRefGoogle Scholar
  11. 11.
    Wang, C.; Chen, J.; Xia, C.; et al.: A new method to calculate threshold values of ductile fracture criteria for advanced high-strength sheet blanking. J. Mater. Eng. Perform. 23(4), 1296–1306 (2014)CrossRefGoogle Scholar
  12. 12.
    Abe, Y.; Yonekawa, R.; Sedoguchi, K.; Mori, K.: Shearing of ultra-high strength steel sheets with step punch. Procedia Manuf. 15, 597–604 (2018)CrossRefGoogle Scholar
  13. 13.
    Mori, K.; Abe, Y.; Suzui, Y.: Improvement of stretch flangeability of ultra high strength steel sheet by smoothing of sheared edge. J. Mater. Process. Technol. 210(4), 653–659 (2010)CrossRefGoogle Scholar
  14. 14.
    Nothhaft, K.; Suh, J.; Golle, M.; et al.: Shear cutting of press hardened steel: influence of punch chamfer on process forces, tool stresses and sheared edge qualities. Prod. Eng. 6(4–5), 413–420 (2012)CrossRefGoogle Scholar
  15. 15.
    Fang, G.; Zeng, P.; Lou, L.: Finite element simulation of the effect of clearance on the forming quality in the blanking process. J. Mater. Process. Technol. 122(2–3), 249–254 (2002)CrossRefGoogle Scholar
  16. 16.
    Yukawa, N.; Inukai, Y.; Yoshida, Y.; Ishikawa, T.; Jimma, T.: Finite-element analysis of blanking process. J. Jpn. Soc. Technol. Plast. 39, 1129–1133 (1998)Google Scholar
  17. 17.
    Behrens, B.; Bouguecha, A.; Vucetic, M.; Krimm, R.; Hasselbusch, T.; Bonk, C.: Numerical and experimental determination of cut-edge after blanking of thin steel sheet of DP1000 within use of stress based damage model. Procedia Eng. 81, 1096–1101 (2014)CrossRefGoogle Scholar
  18. 18.
    Quochung, L.; de Vries, J.; Golovashchenko, S.F.; Bonnen, J.J.F.: Analysis of sheared edge formability of aluminum. J. Mater. Process. Technol. 214(4), 876–891 (2014)CrossRefGoogle Scholar
  19. 19.
    Golovashchenko, S.F.; Wang, N.; Le, Q.: Trimming and sheared edge stretchability of automotive 6xxx aluminum alloys. J. Mater. Process. Technol. 264, 64–75 (2019)CrossRefGoogle Scholar

Copyright information

© King Fahd University of Petroleum & Minerals 2019

Authors and Affiliations

  1. 1.Department of Production Engineering Technology, Faculty of Industry and TechnologyRajamangala University of Technology RattanakosinHua HinThailand

Personalised recommendations