Dynamic behaviour of the elasto-viscoplastic structures - Material parameter identification problems for different constitutive laws

The identification of material parameters for the viscoplastic Chaboche and Bodner-Partom formulations is presented only using tensile tests and to compute the structure dynamic behaviour. This parameter identification for the Bodner-Partom law is quite easy. The parameter study for the Chaboche law needs carrying out the strain controlled cyclic tests. In this work, experiments are proposed to be replaced Ly numerical simulations for the second use. A set of parameters is identified for steel in each formulation, being used to calculate the dynamic behaviour of circular plates. The results are compared with the experimental data on steel plates.