Rotational deformation modes in near-boundary regions of grain structure in a loaded polycrystal

D. D. Moiseenko, Yu I. Pochivalov, P. V. Maksimov, V. E. Panin

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

Experiments were performed to study the defect structure formation in a thin surface layer of 20Cr18Ni10Ti steel in frictional wear. It is shown that plastic deformation constrained by a friction pair is inhomogeneous and displays a vortex rotational character. A method of excitable cellular automata is developed for a theoretical description of the formation of vortex structures in multiscale polycrystalline structures. Numerical experiments demonstrate the formation of rotational deformation modes on different structural scales-modulation of local moments of forces along the grain boundary and fragmentation of initial structural elements in initial conglomerates of self-consistently deformed grains in the field of couple stresses.

Original languageEnglish
Pages (from-to)248-258
Number of pages11
JournalPhysical Mesomechanics
Volume16
Issue number3
DOIs
Publication statusPublished - 2013

Keywords

  • cellular automata
  • computer simulation
  • physical mesomechanics
  • tribological contact

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Mechanics of Materials
  • Materials Science(all)
  • Condensed Matter Physics

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