Hydro-mechanical hole punching 공정의 유한요소 해석Finite Element analysis for Hydro-mechanical Hole Punching Process

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The milli-components for electronic and medical device etc. have been manufactured by conventional process. Forming and machining process for those milli-components need tremendous cost and time because products require higher dimensional accuracy than the conventional ones. For instance, conventional mechanical punching process has many drawbacks for applying to high accuracy products. The final radius of hole can be varied and burr which interrupting another procedure is generated. Hydro-mechanical punching process makes possible to reduce amount of burr and obtain the fine shearing surface using the operating fluid. Hydrostatic pressure retards occurrence of initial crack and induces to locate the fracture surface in the middle of sheet to thickness direction. In this paper, Hydro-mechanical punching process is analyzed using finite element method and the effect of hydrostatic pressure is evaluated during punching process. The prediction of fracture is performed adopting the various ductile fracture criteria such as Cockcroft, Brozzo and Oyane's criterion using a user subroutine in ABAQUS explicit.
Publisher
한국소성가공학회
Issue Date
2005-05-12
Language
KOR
Citation

한국소성가공학회 2005년도 춘계학술대회 , pp.159 - 162

URI
http://hdl.handle.net/10203/19369
Appears in Collection
ME-Conference Papers(학술회의논문)
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