Transactions of Materials Processing (소성∙가공)

The Korean Society for Technology of Plasticity and materials processing (한국소성∙가공학회)
권호 표지
DOI QR코드

DOI QR Code

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

하이드로 피어싱된 튜브 부위의 변형해석

  • 최성기 (부산대학교 정밀기계공학과/정밀정형 및 금형가공연구센터) ;
  • 김동규 (부산대학교 정밀기계공학과/정밀정형 및 금형가공연구센터) ;
  • 문영훈 (부산대학교 정밀기계공학과/정밀정형 및 금형가공연구센터)
  • Published : 2004.04.01
Download PDF
⟨ Previous Next ⟩

Abstract

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.

Keywords

References

  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
  4. Material Science and Engineering v.A279 Theoretical and Experimental analysis of stroke controlled tube hydroforming N.Asnafi;A.Skogsgardh
  5. The Tube and Pipe Quarterly v.7 no.4 Hydroforming tube K.Brewster;K.Sutter;M.Ahmetoglu;T.Altan
  6. Proceedings of the 2nd Annual Automotive Tube Conefernce, Dearbon, Michigan v.13;14 no.May Hydroforming products and process requirements and implementation S.Shah;C.Bruggemann
  7. US Patent NO 5,974,846, Method of forming and piercing a tube
  8. US Patent NO 5,398,533, Apparatus for piercing hydroformed part
  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