Physical fundamentals of mesomechanics of a two-layer composite: Development of fatigue cracking

V. E. Panin, T. F. Elsukova, Yu F. Popkova

Research output: Contribution to journalArticle

7 Citations (Scopus)

Abstract

The article examines the mesomechanics of the initiation and development of a fatigue crack in the two-layer composite aluminum foil A999-plates of commercial titanium or aluminum under alternate bending. The back surface of the foil is fixed by a glutinous compound, and the three-dimensional roughness cannot be formed on it when loading the composite. The basis of the nonlinear wave of the fatigue failure is the two-scale self-consistency of the localized shears accompanied by material rotations in the plastically deformed soft foil and counter elastic displacements and rotations induced by them in the commercial metal plate. They brake the development of plastic shears in the foil and, correspondingly, fatigue crack propagation, and cause crack opening predominantly by rotation on one side inducing the asymmetry of the vortex field of displacements and the material rotations related to them in the foil.

Original languageEnglish
Pages (from-to)100-103
Number of pages4
JournalDoklady Physics
Volume57
Issue number3
DOIs
Publication statusPublished - 1 Mar 2012

ASJC Scopus subject areas

  • Computational Mechanics
  • Mechanics of Materials
  • Physics and Astronomy(all)

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