The sheet formability can be improved by the optimum drawbeads installation because drawbeads can control the flow of the metal into the die cavity when the punch enters into the die opening.
In this paper, we had an object of step and square drawbe...
The sheet formability can be improved by the optimum drawbeads installation because drawbeads can control the flow of the metal into the die cavity when the punch enters into the die opening.
In this paper, we had an object of step and square drawbeads.
The drawing characteristics for two drawbeads are analyzed by 2-D rigid-plastic F.E.M. and also are measured experimentally. In addition, for the validity of F.E.M., theoretical results are compared with the experimental results.
Where, the drawbead restraining forces and the strain distributions on the upper & lower skins of specimens are included in the drawing characteristics.
Also, the effects of the drawbead dimensions, drawing angles and blank holding forces on the drawing characteristics are investigated in both F.E.M. and experiment.
During a drawing process, the drawing angles are varied from 0˚∼ 60˚.
As a result, the aim of this paper is to provide fundamental data in designing various drawbeads which are being used in practical industry.