한국소성가공학회:학술대회논문집 (Proceedings of the Korean Society for Technology of Plasticity Conference)
- 한국소성가공학회 1995년도 춘계학술대회논문집
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- Pages.196-202
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- 1995
탄소성 유한요소법에 의한 드로우비드 성형 해석
Numerical Simulation of Drawbead Formation in a Binder Wrap Process by an elasto-Plastic Finite Element Method
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Choi, Tae-Hoon
(Dept. of Mechanical Engineering, KAIST) ;
- Huh, Hoon (Dept. of Mechanical Engineering, KAIST) ;
- Lee, Jang-Hee (Dept. of Tool MFG., HMC) ;
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Park, Chun-Dal
(Dept. of Tool MFG., HMC)
- 발행 : 1995.03.01
초록
Drawbead formulation is the first process together with a binder wrap process in a sheet metal forming process. The purpose of a drawbead is to control the flow of the metal into the die in panel press forming. To simulate the drawbead formation process, an elasto-plastic finite element formulation is derived from the equilibrium equation an drelated boundary conditions considering the proper contact conditons. The developed finite element program is applied to drawbead formation in the plane strain condition. The simulation of drawbead formation produces the distribution fo stress and strain along the bead and the resultant elongation of the sheet in the cavity region with respect to various cavity dimensions of the sheet as well as the punch force of a drawbead and the amount of draw-in with respect to the stroke fo a drawbead. The numerical resutls provides the fundamental information as a boundary condition to analyze the complex binder wrap phenomena and panel press forming in simple way.
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