Abstract

Unlike the drawing of round section from round bar, the shaped drawing like polygonal section is known to have influence not only drawing stress but also corner filling. Therefore. this study analyze the drawing process of suqare rod from round bar using nonsteady state rigid-plastic FEM. To investigate effects of process variables of the drawing process of square rod from round bar, FE-simulations with variety of reduction in area and semi-die angle for a given frictional condition have been conducted. By this results, it has to suggest optimal process condition on the drawing stress and the corner filling. In addition, it has determined forming limit considering necking and bulging.

Keywords

• The Drawing Process of square Rod from Round Bar;
• Nonsteady State;
• Rigid-Plastic FEM;
• Drawing Stress;
• Corner Filling;
• Forming Limit

• 원형봉의 정사각재 인발발공정;
• 비정상 상태;
• 강소성 유한요소법;
• 인발응력;
• 코너채움;
• 성형한계;