The Energetic Aspects in Deep Drawing with Combined Restraint

Abstract

In deep drawing with combined restraint the blank is restrained in two succcesive stages. Force is one of the energetic parameter which characterizes the deformation process. In the paper are presented the experimental and numerical works regarding the influence of the die radius and degree of deformation toward the force variation. For the experimental work a transducer was designed. For the numerical experiments a finite element program was used. It was demonstrated that with increasing the degree of deformation the value of force also increases. Also, for the same degree of deformation, the increase of the die radius leads to a decrease of force. It was concluded that, for the process of deep drawing the use of a higher die radius has important advantages from the energetic point of view