소성∙가공 (Transactions of Materials Processing)

  • 제13권2호
  • /
  • Pages.154-159
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  • 2004
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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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하이드로 피어싱된 튜브 부위의 변형해석

Analysis of Deformation Surrounding the Pierced Hole in the Tube Hydro-Piercing Process

  • 최성기 (부산대학교 정밀기계공학과/정밀정형 및 금형가공연구센터) ;
  • 김동규 (부산대학교 정밀기계공학과/정밀정형 및 금형가공연구센터) ;
  • 문영훈 (부산대학교 정밀기계공학과/정밀정형 및 금형가공연구센터)
  • 발행 : 2004.04.01
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초록

Deformation surrounding the hole in the tube during the hydropiercing process has been investigated in this study. The tube is expanded and internally pressurized between upper and lower dies, and a piercing punch is driven forcefully through a cross passage in the die and through the wall of the tube. The pressurized fluid within the tube provides support to the wall of the tube during a piercing step to form a hole in the tube having less deformation surrounding the hole in the tube. The deformation area may be fully retracted to a substantially flat form or partially retracted to a countersunk form. In this study, a mathematical model that can predict deformation surrounding the hole has been proposed and experimentally verified by actual hydropiercing test.

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참고문헌

  1. Journal of materials precessing technollogy v.98 Tube hydroforming:current research, applications and need for training M.Ahmetoglu;K.Sutter;X.J.Li;T.Altan https://doi.org/10.1016/S0924-0136(99)00203-4
  2. International Journal of machine Tools and Manufacture v.41 On the characteristics of tubular materials for hydroforming-experimentation and analysis M.Koc;A.Yingyot;T.Altan https://doi.org/10.1016/S0890-6955(00)00070-5
  3. Metals and Materials International v.41 Collapse characteristics of hydroformed tubes Y.S.Kim;Y.M.Lee;C.Kim;S.M.Hwang https://doi.org/10.1007/BF03186108
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  5. The Tube and Pipe Quarterly v.7 no.4 Hydroforming tube K.Brewster;K.Sutter;M.Ahmetoglu;T.Altan
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  9. US Patent NO 5,890,387, Apparatus and method for forming and hydrofopiercing a tubular frame member
  10. J. of Materials processing technology v.59 Material fracture and burr formation in blanking results of FEM simulation and comparison with experiments Etienne Taupin;Jochen Breitling;Wei-Tsu Wu;Taylan Altan https://doi.org/10.1016/0924-0136(96)02288-1