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A parametric simulation method for discrete dislocation dynamics

  • M. BenešEmail author
  • J. Kratochvíl
  • J. Křištan
  • V. Minárik
  • P. Pauš
Article

Abstract

A new computer simulation method employed in discrete dislocation dynamics is presented. The article summarizes results of an application of the method to elementary interactions among glide dislocations and dipolar dislocation loops. The glide dislocations are represented by parametrically described curves moving in glide planes whereas the dipolar loops are treated as rigid objects. All mutual force interactions are considered in the models. As a consequence, the computational complexity rapidly increases with the number of objects considered. This difficulty is treated by advanced computational techniques such as suitable accurate numerical methods and parallel implementation of the algorithms. Therefore the method is able to simulate particular phenomena of dislocation dynamics which occur in crystalline solids deformed by single slip: generation of glide dislocations from the Frank-Read source, interaction of glide dislocations with obstacles, their encounters in channels of the bands, sweeping of dipolar loops by glide dislocations and a loop clustering.

Keywords

European Physical Journal Special Topic Burger Vector Dislocation Loop Resolve Shear Stress Rigid Object 
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

© EDP Sciences and Springer 2009

Authors and Affiliations

  • M. Beneš
    • 1
    Email author
  • J. Kratochvíl
    • 2
  • J. Křištan
    • 3
  • V. Minárik
    • 1
  • P. Pauš
    • 3
  1. 1.Czech Technical University Prague, Faculty of Nuclear Sciences and Physical EngineeringPragueCzech Republic
  2. 2.Czech Technical University Prague, Faculty of Civil EngineeringPragueCzech Republic
  3. 3.Charles University, Faculty of Mathematics and PhysicsPragueCzech Republic

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