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This article is cited in 1 scientific paper (total in 1 paper)
Numerical study of stress relaxation in nanostructures in the course of uniaxial straining
I. F. Golovneva, E. I. Golovnevaa, M. S. Voroninab, È. R. Pruuela a Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
b Lavrentyev Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
Abstract:
Stress relaxation in a nano-sized rod containing structural defects in the course of constant-rate uniaxial straining is studied, and the reasons for the onset of this phenomenon are determined. Under the assumption that structural defects can serve as carriers of irreversible deformation of a higher level than dislocations, the problem is solved by the molecular dynamics method. It is found that stress relaxation is accompanied by the transition of the entire system to a steady state with a deeper potential minimum as compared to the system energy before the stress relaxation process, resulting in a temperature increase and reduction of the strain tensor components.
Keywords:
molecular dynamics method, stress relaxation, nano-sized rod, crystal lattice defects, carrier of irreversible deformation.
Received: 02.10.2018 Revised: 02.10.2018 Accepted: 25.03.2019
Citation:
I. F. Golovnev, E. I. Golovneva, M. S. Voronin, È. R. Pruuel, “Numerical study of stress relaxation in nanostructures in the course of uniaxial straining”, Prikl. Mekh. Tekh. Fiz., 60:4 (2019), 111–118; J. Appl. Mech. Tech. Phys., 60:4 (2019), 685–691
Linking options:
https://www.mathnet.ru/eng/pmtf420 https://www.mathnet.ru/eng/pmtf/v60/i4/p111
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