Theoretical study of peculiarities of unstable longitudinal shear crack growth in sub-rayleigh and supershear regimes

Evgeny V. Shilko, Sergey G. Psakhie

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

In the paper we present the results of the theoretical study of some fundamental aspects of mode II crack propagation in conventional sub-Rayleigh regime and transition to intersonic regime. It is shown that development of a sub-Rayleigh shear crack is determined in many respects by elastic vortex traveling ahead of the crack tip at a shear wave velocity. Formation of such a vortex helps to better understand the well-known phenomenon of acceleration of a shear crack towards the longitudinal wave velocity. Simulation results have shown that due to self-similarity of shear crack propagation the conditions of sub-Rayleigh to intersonic transition depend on dimensionless material and crack parameters. Two key dimensionless parameters are proposed.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
PublisherAmerican Institute of Physics Inc.
Pages571-574
Number of pages4
Volume1623
ISBN (Print)9780735412606
DOIs
Publication statusPublished - 2014
EventInternational Conference on Physical Mesomechanics of Multilevel Systems 2014 - Tomsk, Russian Federation
Duration: 3 Sep 20145 Sep 2014

Other

OtherInternational Conference on Physical Mesomechanics of Multilevel Systems 2014
CountryRussian Federation
CityTomsk
Period3.9.145.9.14

Keywords

  • Computer-aided simulation
  • Dynamic mode II fracture
  • Interface crack
  • Movable cellular automaton method
  • Self-similarity
  • Sub-rayleigh regime
  • Supershear regime

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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  • Cite this

    Shilko, E. V., & Psakhie, S. G. (2014). Theoretical study of peculiarities of unstable longitudinal shear crack growth in sub-rayleigh and supershear regimes. In AIP Conference Proceedings (Vol. 1623, pp. 571-574). American Institute of Physics Inc.. https://doi.org/10.1063/1.4901500