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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

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

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