Enabling Strain Hardening Simulations with Dislocation Dynamics

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Numerical algorithms for discrete dislocation dynamics simulations are investigated for the purpose of enabling strain hardening simulations of single crystals on massively parallel computers. The algorithms investigated include the /(N) calculation of forces, the equations of motion, time integration, adaptive mesh refinement, the treatment of dislocation core reactions, and the dynamic distribution of work on parallel computers. A simulation integrating all of these algorithmic elements using the Parallel Dislocation Simulator (ParaDiS) code is performed to understand their behavior in concert, and evaluate the overall numerical performance of dislocation dynamics simulations and their ability to accumulate percents of plastic strain.

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Arsenlis, A & Cai, W December 20, 2006.

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Numerical algorithms for discrete dislocation dynamics simulations are investigated for the purpose of enabling strain hardening simulations of single crystals on massively parallel computers. The algorithms investigated include the /(N) calculation of forces, the equations of motion, time integration, adaptive mesh refinement, the treatment of dislocation core reactions, and the dynamic distribution of work on parallel computers. A simulation integrating all of these algorithmic elements using the Parallel Dislocation Simulator (ParaDiS) code is performed to understand their behavior in concert, and evaluate the overall numerical performance of dislocation dynamics simulations and their ability to accumulate percents of plastic strain.

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PDF-file: 64 pages; size: 0.7 Mbytes

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  • Journal Name: Modelling and Simulation in Materials Science and Engineering, vol. 15, no. 6, September 1, 2007, pp. 553-595; Journal Volume: 15; Journal Issue: 6

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  • Report No.: UCRL-JRNL-227039
  • Grant Number: W-7405-ENG-48
  • Office of Scientific & Technical Information Report Number: 920878
  • Archival Resource Key: ark:/67531/metadc898120

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  • December 20, 2006

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  • Sept. 27, 2016, 1:39 a.m.

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  • Nov. 23, 2016, 6:18 p.m.

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Arsenlis, A & Cai, W. Enabling Strain Hardening Simulations with Dislocation Dynamics, article, December 20, 2006; Livermore, California. (digital.library.unt.edu/ark:/67531/metadc898120/: accessed December 12, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.