Numerical Study of Stress Relaxation in Nanostructures in the Course of Uniaxial Straining

  • I. F. Golovnev
  • E. I. GolovnevaEmail author
  • M. S. Voronin
  • E. R. Pruuel


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.


molecular dynamics method stress relaxation nanorod crystal lattice defects carrier of irreversible strain 


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© Pleiades Publishing, Ltd. 2019

Authors and Affiliations

  • I. F. Golovnev
    • 1
  • E. I. Golovneva
    • 1
    Email author
  • M. S. Voronin
    • 2
    • 3
  • E. R. Pruuel
    • 2
  1. 1.Khristianovich Institute of Theoretical and Applied Mechanics, Siberian BranchRussian Academy of SciencesNovosibirskRussia
  2. 2.Lavrentyev Institute of Hydrodynamics, Siberian BranchRussian Academy of SciencesNovosibirskRussia
  3. 3.Novosibirsk State Technical UniversityNovosibirskRussia

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