Experimental observation of dynamic ductile damage development of Cu under various triaxiality conditions Free

Assuming it is controlled by its plastic behavior, the Gurson model aims at describing damage development in a porous ductile material. It has been extended by Perrin to describe damage evolution in ductile viscoplastic porous materials. The so-called Gurson-Perrin model (GPm) allows representing damage development with respect to stress triaxiality and strain-rate conditions. We propose a new experimental design able to test and validate the GPm under various dynamic conditions and for different triaxiality levels. The principle of this experimental project will be detailed in this paper. An analysis of its results and a comparison with numerical simulations will be presented.