This article is cited in 6 papers

Experimental study and mathematical modeling of the behavior of St.3, 20Kh13, and 08Kh18N10T steels in wide ranges of strain rates and temperatures

A. M. Bragov^a, L. A. Igumnov^a, V. B. Kaydalov^b, A. Yu. Konstantinov^a, D. A. Lapshin^b, A. K. Lomunov^ac, F. M. Mitenkov<sup>b

a</sup> Research Institute for Mechanics at the Lobachevsky State University of Nizhni Novgorod, Nizhny Novgorod, 603950, Russia
^b Afrikantov Experimental Design Bureau for Mechanical Engineering, Nizhnii Novgorod, 603074, Russia
^c Nizhny Novgorod State University of Architecture and Civil Engineering, Nizhny Novgorod, 603950, Russia

Abstract: 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.

Keywords: strain diagram, strain rate, adiabatic heating, Kolsky method, mathematical model, identification, verification.

UDC: 539.3

Received: 08.06.2015

DOI: 10.15372/PMTF20150607

 English version: Journal of Applied Mechanics and Technical Physics, 2015, 56:6, 977–983

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