소성∙가공 (Transactions of Materials Processing)

  • 제22권3호
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  • Pages.133-142
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  • 2013
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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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초기 이방성 SUS409L 박판재의 직사각 컵 성형을 위한 다단 디프드로잉 공정 적용에 관한 수치적 연구

Numerical Simulation for a Multi-Stage Deep Drawing of Anisotropic SUS409L Sheet into a Rectangular Cup

  • 박지우 (부산대학교 항공우주공학과) ;
  • 구태완 (부산대학교 설계기반미래성형기술센터) ;
  • 강범수 (부산대학교 항공우주공학과)
  • Park, J.W. (Department of Aerospace Engineering, Pusan National University) ;
  • Ku, T.W. ;
  • Kang, B.S. (Department of Aerospace Engineering, Pusan National University)
  • 투고 : 2013.02.05
  • 심사 : 2013.04.23
  • 발행 : 2013.06.01
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초록

Recently, electric vehicles and hybrid cars are being promoted as alternatives to reduce automobile emissions. Generally, thin sheet materials such as aluminum alloy AA300X and cold-rolled steel sheet such as JIS-G-3141 are used for the container for the lithium-ion secondary batteries. In this study, a multi-stage deep drawing process is used to produce a rectangular cup from thin stainless steel sheet material, SUS409L, with an initial blank thickness of 0.4mm for the battery container application. Numerical simulations of the first through the fifth stages for the multi-stage deep drawing with thin SUS409L sheet were conducted using LS-Dyna3D Implicit/Explicit. Special consideration was given to the deformation characteristics due to the normal anisotropy of the sheet material. The numerical simulations were conducted with both isotropic properties and the anisotropic properties of the initial blank material. An unexpected forming failure, barreling in the bottom region of the deep drawn rectangular cup, was observed. This failure mode can be avoided by additional ironing thickness control during the process.

키워드

참고문헌

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