EXPERIMENTAL STUDY AND MATHEMATICAL MODELING OF THE BEHAVIOR OF St.3, 20Kh13, AND 08Kh18N10T STEELS IN WIDE RANGES OF STRAIN RATES AND TEMPERATURES

摘要

Results of an experimental study of the behavior of St.3, 20Kh13, and 08Kh18N10T steels under static and dynamic loading are reported. The influence of the strain rate and temperature on characteristics of strength and plasticity is studied. Based on the data obtained, the parameters of the Johnson-Cook model are determined. This model is used in commercial software to describe the yield surface radius as a function of loading parameters. The adequacy of the identified model is verified in a series of special test experiments.