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Crack Initiation, Kinking and Nanoscale Damage in Silica Glass: Multimillion-Atom Molecular Dynamics Simulations

  • Y. C. Chen
  • K. Nomura
  • Z. Lu
  • R. Kalia
  • A. Nakano
  • P. Vashishta
Conference paper
  • 1.1k Downloads
Part of the IUTAM Bookseries book series (IUTAMBOOK, volume 13)

Abstract

We present molecular dynamics (MD) simulations of crack kinking, growth, propagation and healing at the nanometer scale in a confined, pre-cracked silica glass subjected to dynamic mode II loading. The pre-crack tip kinks towards maximum mode I tension and nanometer scale cavities are nucleated in the tensile region ahead of the kink. Nanocavities coalesce with kinks to form wing cracks. Dynamics of wing cracks are dominated by coalescence with damage cavities, and the growth and healing of crack and cavities are controlled by confinement.

Keywords

Crack Initiation Rayleigh Wave Linear Elastic Fracture Mechanics Compression Wave Silica Glass 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer Science+Business Media, B.V. 2009

Authors and Affiliations

  • Y. C. Chen
    • 1
  • K. Nomura
    • 1
  • Z. Lu
    • 1
  • R. Kalia
    • 1
  • A. Nakano
    • 1
  • P. Vashishta
    • 1
  1. 1.Collaboratory for Advanced Computing and SimulationsUniversity of Southern CaliforniaLos AngelesUSA

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