Journal of Computer-Aided Materials Design

, Volume 4, Issue 3, pp 165–173 | Cite as

A multi-scale numerical modelling of crack propagation in a 2D metallic plate

  • H. Rafii-Tabar
  • L. Hua
  • M. Cross

Abstract

A new multi-scale model of brittle fracture growth in an Ag plate with macroscopic dimensions is proposed in which the crack propagation is identified with the stochastic drift-diffusion motion of the crack-tip atom through the material. The model couples molecular dynamics simulations, based on many-body interatomic potentials, with the continuum-based theories of fracture mechanics. The Ito stochastic differential equation is used to advance the tip position on a macroscopic scale before each nano-scale simulation is performed. Well-known crack characteristics, such as the roughening transitions of the crack surfaces, as well as the macroscopic crack trajectories are obtained.

Crack propagation Multi-scale modelling MD-continuum modelling Stochastic modelling 

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Copyright information

© Kluwer Academic Publishers 1998

Authors and Affiliations

  • H. Rafii-Tabar
    • 1
  • L. Hua
    • 1
  • M. Cross
    • 1
  1. 1.Nano-Science Simulation Group, Centre For Numerical Modelling and Process Analysis, School of Computing and Mathematical SciencesUniversity of GreenwichLondonU.K

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