Abstract
In this research, deformation process of a thin ring plate with circular hole has been analyzed. Regarding the material characteristics and forming facilities, various forming in a blank with are possible Deep drawing without variation in central hole diameter and also by variation in hole diameter and Flanging when the outer diameter of blank is constant or variable. By taking into account the thickness variations, and work hardening, the forming of thin ring plate at plane stress condition has been considered. It is shown that the deformation procedure of each point in the blank can be describe by non-linear vector function of plasticity.
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