The deformation and fracture of composite materials with different coating thickness. Numerical simulation

Ruslan Revovich Balokhonov, V. A. Romanova

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)

Abstract

The deformation and fracture of composite materials with different coating thickness are simulated. The boundary-value problem in a plane strain formulation is solved numerically by the finite-difference method. The mechanical response of a steel substrate and a boride coating is described by respective models for an elastic-plastic medium subjected to isotropic hardening and for elastic-brittle fracture. The coating-substrate interface geometry corresponds to the configuration found experimentally and is accounted for explicitly in the calculations. A series of numerical experiments was conducted for varying coating thickness. Within a thin surface layer (∼ 80 μm), the stress concentration near the interface is shown to increase as the coating thickness is decreased, i.e., as the interface approaches the free specimen surface. The effect is evident as early as the elastic deformation stage and is enhanced progressively as plastic deformation develops in the substrate.

Original languageEnglish
Pages (from-to)28-37
Number of pages10
JournalPhysical Mesomechanics
Volume13
Issue number1-2
DOIs
Publication statusPublished - 2010
Externally publishedYes

Keywords

  • Coating thickness
  • Composite materials
  • Mechanics of heterogeneous media
  • Numerical simulation
  • Specimen surface

ASJC Scopus subject areas

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

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