스템핑 금형의 최적설계를 위한 성형 및 구조 평가에 관한 연구

For the optimal design of starnping dies, formabilities during the forming processes and strengths against the forming loads are evaluated by sectional forming analysis program, SH-FORM2, and 3-D structureal analvsis system, IDEAS, In the formability analysis of hood inner panel dies, SH-FORM2 was able to predict the stretch and draw amounts and good agreement between measured and computed thickness strains was obtained. In the structural analysis, IDEAS revealed that stamping dies were designed to have enough stiffness inthe strength, though some parts of upper die, to which impact load is transmitted from the distance block of blank holder, need to be reinforced by the ribs.