• Title/Summary/Keyword: 계단형 드로오비드

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A Study on the Drawing characteristics of Sheet through Step Drawbead (계단형 드로오비드에 의한 판재의 인출특성에 관한 연구)

  • 박원배;김창만;김낙수;서대교;전기찬
    • Transactions of Materials Processing
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    • v.5 no.2
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    • pp.130-137
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    • 1996
  • The sheet formability can be improved by the optimum drawbeads installation because draw-beads can control the flow of the metal into the die cavity when the punch enters into the die opening, In this study the drawing characteristics for step drawbead are analyzed by 2-D rigid -plastic FEM and also are measured experimentally. In addition for the validity of FEM theoretical results are compared with the experimental results. Especially the draw bead restrain-ing forces and the strain distributions of drawn specimens are obtained in both FEM and experiment. Also the effects of the drawbead dimensions drawing angles and blank holding forces on the drawing characteristics are investigated.

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Finite Element Analysis and Experiment on Drawing Characteristics through Step Drawbead (계단형 드로오비드의 인출특성에 관한 유한요소해석 및 실험)

  • 박원배;김창만;전기찬;김낙수;서대교
    • Proceedings of the Korean Society for Technology of Plasticity Conference
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    • 1995.10a
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    • pp.128-135
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    • 1995
  • Theoretical and experimental drawing characteristics for the step drawbead are discussed. The drawbead restraining forces and strains by the varous drawing angles are measured experimentally. Also, during the blank holding process, the strain distributions of upper and lower skins of specimens are analysed by the 2-D rigid-plastic F.E.M And the drawbead restraining forces and strain distributions for the drawn specimens by the drawing length are obtained by experiment.

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