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Fundamentals of Dislocation Dynamics Simulations

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Multiscale Materials Modeling for Nanomechanics

Part of the book series: Springer Series in Materials Science ((SSMATERIALS,volume 245))

Abstract

Dislocation dynamics (DD) is a modeling approach for the study of crystal plasticity wherein individual dislocation lines are discretized and their motion in the crystal is simulated. This chapter provides an overview of the basic features of the DD methodology and a guide for how to run DD simulations. Each of the basic building blocks, in terms of both dislocation physics and numerics, is first discussed. Three case studies are then presented, showing how to set up a simulation, ensure solution convergence, and extract key outputs. The major DD codes are briefly reviewed, discussing their major features and differences. Finally, the relation of DD to material models at other length and time scales is discussed, along with current challenges and research topics.

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Notes

  1. 1.

    A more rigorous definition can be written in terms of the line shape functions [9, 35].

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Acknowledgements

We wish to thank Dr. Benoit Devincre for useful discussions. This work was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Award No. DE-SC0010412. Sandia National Laboratories is a multi-program laboratory managed and operated by Sandia Corporation, a wholly owned subsidiary of Lockheed Martin Corporation, for the US Department of Energy’s National Nuclear Security Administration under contract DE-AC04-94AL85000.

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  1. Sandia National Laboratories, Livermore, CA, 94550, USA

    Ryan B. Sills & William P. Kuykendall

  2. Stanford University, Stanford, CA, 94305, USA

    Ryan B. Sills, William P. Kuykendall, Amin Aghaei & Wei Cai

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  1. Drexel University, Philadelphia, Pennsylvania, USA

    Christopher R. Weinberger

  2. Drexel University, Philadelphia, Pennsylvania, USA

    Garritt J. Tucker

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Sills, R.B., Kuykendall, W.P., Aghaei, A., Cai, W. (2016). Fundamentals of Dislocation Dynamics Simulations. In: Weinberger, C., Tucker, G. (eds) Multiscale Materials Modeling for Nanomechanics. Springer Series in Materials Science, vol 245. Springer, Cham. https://doi.org/10.1007/978-3-319-33480-6_2

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