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IssuesArchive of Issues2017-5pp.488-494

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V.E. Vildeman, E.V. Lomakin, T.V. Tret'yakova, and M.P. Tret'yakov, "Supercritical Deformation and Fracture of Bodies with Concentrators under Plane Stress State Conditions," Mech. Solids. 52 (5), 488-494 (2017)
Year 2017 Volume 52 Number 5 Pages 488-494
DOI 10.3103/S002565441705003X
Title Supercritical Deformation and Fracture of Bodies with Concentrators under Plane Stress State Conditions
Author(s) V.E. Vildeman (Perm National Research Polytechnic University, Komsomolsky pr. 29, Perm, 614990 Russia)
E.V. Lomakin (Perm National Research Polytechnic University, Komsomolsky pr. 29, Perm, 614990 Russia; Lomonosov Moscow State University, Moscow, 119992 Russia, evlomakin@yandex.ru)
T.V. Tret'yakova (Perm National Research Polytechnic University, Komsomolsky pr. 29, Perm, 614990 Russia)
M.P. Tret'yakov (Perm National Research Polytechnic University, Komsomolsky pr. 29, Perm, 614990 Russia)
Abstract The paper deals with experimental studies of inhomogeneous strain fields with regions of supercritical behavior of the material in the case of extension of plane specimens of steel 20 with concentrators of different geometry by using the method of digital image correlation. The use of a video system permits obtaining experimental data about the distribution of the fields of longitudinal, transverse, and shear components and the strain intensity. The previously considered criteria for the deformation process transition to the supercritical stage for different types of the stress-strain state were used to distinguish the regions of supercritical behavior and to analyze the evolution of the strain and temperature fields in their stable development.
Keywords supercritical deformation, structural strength, stress concentrator, strain localization, digital image correlation
References
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Received 14 November 2016
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