소성∙가공 (Transactions of Materials Processing)

  • 제26권2호
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  • Pages.87-94
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  • 2017
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  • 1225-696X(pISSN)
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  • 2287-6359(eISSN)
한국소성∙가공학회 (The Korean Society for Technology of Plasticity and materials processing)
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유한요소해석을 이용한 센터필러(고장력강-780MPa)의 스탬핑 공정 설계

A Study on Stamping of the Center Pillar (High-Strength Steel-780MPa) Using Finite Element Analysis

  • 방기봉 (부산대학교 대학원 기계융합기술학과) ;
  • 성한샘 (부산대학교 대학원 기계융합기술학과) ;
  • 곽효서 (부산대학교 기계기술연구원) ;
  • 김철
  • 투고 : 2016.10.24
  • 심사 : 2017.03.10
  • 발행 : 2017.04.01
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초록

Center pillar, which is installed in the center of flank of car body, supports roof and door and ensures the safety of driver by reducing the damage of car body caused by impact. Recently, high-strength steel is widely used to manufacture the center pillar due to high stiffness and fuel efficiency. In this study, material properties of the high-strength steel, whose tensile strength is more than 780MPa, were obtained to produce the center pillar. Stamping was performed by considering the design parameters (blank holder force, press stroke, blank size and pad pressure) used in the actual filed. The drawbeads were included in the stamping process to reduce the amounts of wrinkling and spring back. Using the commercial software, Autoform R5.2 and Minitab, effects of design parameters of the stamping process upon spring back were analyzed and applied to the design process. The restriking process meets the target of under 0.5mm in the amount of spring back.

키워드

참고문헌

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피인용 문헌

  1. Process Design of Automobile Seat Rail Lower Parts using Ultra-High Strength, DP980 Steel vol.17, pp.2, 2018, https://doi.org/10.14775/ksmpe.2018.17.2.160