Thermodynamic analysis of the Livermore molecular-dynamics simulations of dislocation-mediated plasticity
Abstract
Results of recent large-scale molecular dynamics simulations of dislocation-mediated solid plasticity are compared with predictions of the statistical thermodynamic theory of these phenomena. These computational and theoretical analyses are in substantial agreement with each other in both their descriptions of strain-rate-dependent steady plastic flows and of transient stress peaks associated with initially small densities of dislocations. Lastly, the comparisons between the numerical simulations and basic theory reveal inconsistencies in some conventional phenomenological descriptions of solid plasticity.
- Authors:
-
- Univ. of California, Santa Barbara, CA (United States). Dept. of Physics
- Publication Date:
- Research Org.:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- OSTI Identifier:
- 1468005
- Alternate Identifier(s):
- OSTI ID: 1467955
- Grant/Contract Number:
- AC05-00OR22725; AC05-00OR-22725
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Physical Review E
- Additional Journal Information:
- Journal Volume: 98; Journal Issue: 2; Journal ID: ISSN 2470-0045
- Publisher:
- American Physical Society (APS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 97 MATHEMATICS AND COMPUTING
Citation Formats
Langer, James S. Thermodynamic analysis of the Livermore molecular-dynamics simulations of dislocation-mediated plasticity. United States: N. p., 2018.
Web. doi:10.1103/PhysRevE.98.023006.
Langer, James S. Thermodynamic analysis of the Livermore molecular-dynamics simulations of dislocation-mediated plasticity. United States. https://doi.org/10.1103/PhysRevE.98.023006
Langer, James S. Wed .
"Thermodynamic analysis of the Livermore molecular-dynamics simulations of dislocation-mediated plasticity". United States. https://doi.org/10.1103/PhysRevE.98.023006. https://www.osti.gov/servlets/purl/1468005.
@article{osti_1468005,
title = {Thermodynamic analysis of the Livermore molecular-dynamics simulations of dislocation-mediated plasticity},
author = {Langer, James S.},
abstractNote = {Results of recent large-scale molecular dynamics simulations of dislocation-mediated solid plasticity are compared with predictions of the statistical thermodynamic theory of these phenomena. These computational and theoretical analyses are in substantial agreement with each other in both their descriptions of strain-rate-dependent steady plastic flows and of transient stress peaks associated with initially small densities of dislocations. Lastly, the comparisons between the numerical simulations and basic theory reveal inconsistencies in some conventional phenomenological descriptions of solid plasticity.},
doi = {10.1103/PhysRevE.98.023006},
journal = {Physical Review E},
number = 2,
volume = 98,
place = {United States},
year = {2018},
month = {8}
}
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Works referencing / citing this record:
Statistical Thermodynamics of Crystal Plasticity
journal, January 2019
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