Abstract

Theoretical and experimental drawing characteristics for the single circular and square drawbeads are discussed. During the blank holding process, the strain distributions of upper and lower skins of specimens, and the die reactional forces are analysed by F. E. M., and they are compared with the experimental results. The drawbead restraining forces and strain distributions for the drawn specimens by the various drawing length are also analysed and compared with the experimental results. It is concluded that the theoretical simulations and results could be very useful for the prediction of real cases.

Keywords

• Single Circular Drawbead;
• Square Drawbead;
• Rigid Finite Element Method;
• Die Reactional Forces;
• Restraining Forces;
• Strain Distribution of Upper and Lower Skins;
• Deformed and Drawn Phenomena

• 단일원형비드;
• 사각비드;
• 강소성 유한요소법;
• 다이 반발력;
• 인출력;
• 소재상하부표면의 변형률 분포;
• 성형 및 인출양상;