Design & Manufacturing

  • 제10권1호
  • /
  • Pages.31-35
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  • 2016
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  • 2800-0323(pISSN)
  • /
  • 2733-452X(eISSN)
한국금형공학회 (Korean Society of Die & Mold Engineering)
권호 표지

블랭크 홀딩력 조절을 통한 성형성 향상에 관한 수치적 연구

A Numerical Study on formability improvement by adjusting blank holding force

  • 최현석 (고려대학교 대학원 기계공학과, 한국생산기술연구원 금형기술그룹) ;
  • 정완진 (서울과학기술대학교 기계시스템디자인공학과)
  • Choi, Hyun-Seok (Graduate School, Department of Mechanical Engineering, Korea Univ, Molds&Dies Technology R&D Department, KITECH) ;
  • Chung, Wan-jin (Department of Mechanical System and Design Engineering, Seoul National University of Science and Technology)
  • 투고 : 2015.12.04
  • 심사 : 2016.03.02
  • 발행 : 2016.03.03
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초록

In sheet metal forming process, drawing is typical process. And the key factor of drawing is blank holding force (BHF) A low BHF can cause wrinkling, whereas a high BHF can cause fracture during a deep drawing process. Thus, formability can be influenced by application appropriate BHF. In this study, a variable blank holding force (VBHF) is applied to extend the forming limit by avoiding both wrinkling and fracture. To determine VBHF in drawing process, numerical simulations and statistical analysis are carried out using commercial FEM software.

키워드

참고문헌

  1. E. Doege, N. Sommer, "Optimization of the blank -holder force during deep drawing of rectangular parts. Stahl und Eisen", 103(3), pp. 139-142, 1983.
  2. S. Kitayama, S. Hamano, K. Yamazaki, T. Kubo, H. Nishikawa, Kinoshita, "A closed-loop type algorithm for determination of variable blank holder force trajectory and its application to square cup deep drawing", Int. J. Adv. Manuf. Technol., 51, pp. 507-571, 2010. https://doi.org/10.1007/s00170-010-2656-9
  3. L. Wang, Lee TC, "Controlled strain path forming process with space variant blank holder force using RSM method", J. Mater. Process Technol., 167, pp. 447-455, 2005. https://doi.org/10.1016/j.jmatprotec.2005.06.017
  4. E. H. Jang, S. H. Jung, S. H. Lee, "A Numerical Study on Determination of Optimization Forming Conditions by Servo-Press", 2013.