Design & Manufacturing

Korean Society of Die & Mold Engineering (한국금형공학회)
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A Numerical Study on formability improvement by adjusting blank holding force

블랭크 홀딩력 조절을 통한 성형성 향상에 관한 수치적 연구

  • 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)
  • 최현석 (고려대학교 대학원 기계공학과, 한국생산기술연구원 금형기술그룹) ;
  • 정완진 (서울과학기술대학교 기계시스템디자인공학과)
  • Received : 2015.12.04
  • Accepted : 2016.03.02
  • Published : 2016.03.03
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Abstract

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.

Keywords

References

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