ParaDiS, or Parallel Dislocation Simulator, is a simulation tool that performs direct numerical simulation of dislocation ensembles, the carriers of plasticity, to predict the strength in crystalline materials from the fundamental physics of defect motion, evolution, and interaction.

The code has been successfully deployed on high performance computing architectures and used to study the origins of strength and strain hardening for cubic crystals, the strength of micro-pillars, and irradiated materials at LLNL. The ParaDiS code has been successfully deployed on more than one hundred thousand CPU’s with over ten million active degrees of freedom.

Development Status

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Key publications include:

  • Wei Cai and Vasily V. Bulatov, "Mobility laws in dislocation dynamics simulations", Materials Science and Engineering A, 387, 277 (2004).
  • V. V. Bulatov and W. Cai, Computer Simulations of Dislocations (Oxford University Press, 2006), Chap. 10, pp. 196-240.
  • Wei Cai, Athanasios Arsenlis, Christopher R. Weinberger, Vasily V. Bulatov, "A non-singular continuum theory of dislocations", Journal of the Mechanics and Physics of Solids, 54, 561 (2006).
  • V. V. Bulatov, et al., "Dislocation multi-junctions and strain hardening", Nature, 440, 1174 (2006).
  • David Garner, Carol Woodward, Daniel Reynolds, Gregg Hommes, Sylvie Aubry, and Athanasios Arsenlis "Implicit integrators for dislocation dynamics", Modelling Simul. Mater. Sci. Eng. 23 (2015) 025006.
  • Sylvie Aubry, Moon Rhee, Gregg Hommes, Vasily Bulatov, and Athanasios Arsenlis, "Dislocation dynamics in hexagonal close-packed crystals", Journal of the Mechanics and Physics of Solids, 94, 105-126 (2016).

US Academic: FREE with citation in published works:
A. Arsenlis, Wei Cai, V. V. Bulatov, M. Rhee, M. Tang, T. Oppelstrup, M. Hiratani, G. Hommes, T. G. Pierce, "Enabling Strain Hardening Simulations with Dislocation Dynamics", Modelling and Simulation in Materials Science and Engineering, 15, 553 (2007).

For all other: Contact Charity Follett

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