해석과 실험을 통한 박판성형공정에서의 드로오비드의 구속력에 관한 연구

A Study on the Binding Force of Drawbead in the Sheet Metal Forming Process through the finite element and experimental analysis

  • 반갑수 (상주대학교 자동차공학과) ;
  • 모창기 (상주대학교 자동차공학과) ;
  • 서의권 (중소기업진흥공단)
  • Bahn, Gab-su (School of Automotive Eng., Sangju National University) ;
  • Mo, Chang-ki (School of Automotive Eng., Sangju National University) ;
  • Suh, Eui-kwon (Small Business Corporation (SBC))
  • 투고 : 2006.07.06
  • 심사 : 2007.02.23
  • 발행 : 2007.02.28

초록

It is necessary for development of drawing product with press to have suitable material selection & all process design and the problem during press process has been cleared from judgement of experience & trial and error. Recently we can estimate press process result from computer aided design & FEM. But we can get more reliable result when we can put more precise process variants during FEM. In case of using a drawbead that is used for the material inflow, it is considered for us to put material property, other analysis condition & friction figure when material is passing through the drawbead for better FEM. From our study, we have drawn an analogy bead connection depth, friction figure & drawing and restraining load according to kinds of lubrication from experiment & FEM for the drawbead. We applied above result to the drawing experiment & FEM and confirmed the validity. We could notice the relation between friction figure & drawing load and the friction figure variation according to kinds of lubrication. It is expected to draw more precise analogy that can be used for real process due to more precise process variants application to FEM.

키워드

과제정보

연구 과제 주관 기관 : 상주대학교