Mesoscale plastic flow generation and development for polycrystals

P. V. Makarov, V. A. Romanova

Research output: Contribution to journalArticle

12 Citations (Scopus)

Abstract

The traditional yield criteria of plasticity such as Mises, Tresca, etc. make use of averaged macroparameters while mesomechanics consideration is based on the physical notion of plastic deformation mechanisms. They may involve the development of plastic shears on the surfaces and interfaces of internal structure elements involving stress concentration and relaxation. A criterion of plastic flow is proposed; it is based on the stress-strain state in a cell of computational grid as well as in the neighboring cells. An algorithm of plastic shear generation is developed for the progressive propagation of the plastic shears over the crystal. Test calculations of the crystal behavior under tension are made and the results are presented. (C) 2000 Elsevier Science Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1-7
Number of pages7
JournalTheoretical and Applied Fracture Mechanics
Volume33
Issue number1
DOIs
Publication statusPublished - 1 Feb 2000
Externally publishedYes

Keywords

  • Luders bands
  • Mesolevel
  • Numerical simulation
  • Plasticity criterion
  • Shear bands

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering
  • Applied Mathematics

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