Mesoscale analysis of deformation and fracture in coated materials

Ruslan Revovich Balokhonov, V. A. Romanova, S. Schmauder, E. Schwab

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

The deformation and fracture of a coated material are simulated. A dynamic boundary-value problem in a plane strain formulation is solved numerically by the finite-difference method. To simulate the mechanical response of the steel substrate use was made of the relaxation constitutive equation based on microscopic dislocation mechanisms. A fracture criterion takes into account crack origination and growth in the elastic-brittle coating. Numerical experiments were conducted for varying strain rate of tension and compression. Macroscopic behavior of the coated material is shown to be controlled by interrelated processes of localized plastic flow in the substrate and cracking of the coating that strongly depends on an external strain rate.

Original languageEnglish
Pages (from-to)306-311
Number of pages6
JournalComputational Materials Science
Volume64
DOIs
Publication statusPublished - Nov 2012
Externally publishedYes

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Keywords

  • Boundary-value problem
  • Coated materials
  • Computational mechanics
  • Localized plastic flow and fracture
  • Strain rate

ASJC Scopus subject areas

  • Materials Science(all)
  • Chemistry(all)
  • Computer Science(all)
  • Physics and Astronomy(all)
  • Computational Mathematics
  • Mechanics of Materials

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