comparison between results obtained from experimental tests and numerical model simulation of the effects of punch and the die noses radii on the deep drawing of 304 stanless steel

in the present work, the effects of changing punch and the die radius on several process parameters involved in deep drawing of aisi 304 steel have been studied. deep drawing process of a cylindrical cup was simulated and analysed by numerical modeling. the results were compared with those of obtained from a serie of experimental cupping tests. the comparison shows that: maximum drawing force decreases with increasing the die nose radius. changing in the thickness of cup wall decreases as the punch nose radius increases and thinning of the material occurs in cup wall region in which work hardening is enhanced. finally, the comparison shows the best verification of experimental and computer simulation results.