Numerical Study of Stress Relaxation in Nanostructures in the Course of Uniaxial Straining
- Authors: Golovnev I.F.1, Golovneva E.I.1, Voronin M.S.2,3, Pruuel E.R.2
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Affiliations:
- Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
- Lavrentyev Institute of Hydrodynamics, Siberian Branch
- Novosibirsk State Technical University
- Issue: Vol 60, No 4 (2019)
- Pages: 685-691
- Section: Article
- URL: https://journals.rcsi.science/0021-8944/article/view/161600
- DOI: https://doi.org/10.1134/S0021894419040126
- ID: 161600
Cite item
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 strain 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.
About the authors
I. F. Golovnev
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
Email: elena@itam.nsc.ru
Russian Federation, Novosibirsk, 630090
E. I. Golovneva
Khristianovich Institute of Theoretical and Applied Mechanics, Siberian Branch
Author for correspondence.
Email: elena@itam.nsc.ru
Russian Federation, Novosibirsk, 630090
M. S. Voronin
Lavrentyev Institute of Hydrodynamics, Siberian Branch; Novosibirsk State Technical University
Email: elena@itam.nsc.ru
Russian Federation, Novosibirsk, 630090; Novosibirsk, 630087
E. R. Pruuel
Lavrentyev Institute of Hydrodynamics, Siberian Branch
Email: elena@itam.nsc.ru
Russian Federation, Novosibirsk, 630090