Evaluation of constitutive relations for high strain rate behaviour using the Taylor test

Taylor tests have been performed on specimens of ten metallic materials. Th e different one - dimensional models have been used. In the next step the f inite element code LS DYNA has been used in order to deduce the parameters in the Johnson - Cook constitutive equations. Using of the mutual compariso n of the computed specimen profile with experimental one led to the explana tion of the influence of the parameters mentioned above on the deformation behaviour determined by the computation This procedure also made possible t o choose the constitutive equation which represents the optimum estimation of material behaviour at high strain rates.