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Molecular dynamics ...
Molecular dynamics simulations of shock-induced plasticity in tantalum
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- Tramontina, Diego (author)
- Universidad Nacional de Cuyo
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- Erhart, Paul, 1978 (author)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Germann, Timothy (author)
- Los Alamos National Laboratory
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- Hawreliak, James (author)
- Lawrence Livermore National Laboratory
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- Higginbotham, Andrew (author)
- University Of Oxford
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Park, Nigel (author)
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- Ravelo, Raman (author)
- Los Alamos National Laboratory,University of Texas at El Paso
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- Stukowski, Alexander (author)
- Technische Universität Darmstadt
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- Suggit, Mathew (author)
- University Of Oxford
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- Tang, Yizhe (author)
- Johns Hopkins University
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- Wark, Justin (author)
- University Of Oxford
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- Bringa, Eduardo (author)
- Universidad Nacional de Cuyo,Consejo Nacional de Investigaciones Cientificas y Tecnicas
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(creator_code:org_t)
- Elsevier BV, 2014
- 2014
- English.
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In: High Energy Density Physics. - : Elsevier BV. - 1574-1818. ; 10:3, s. 9-15
- Related links:
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http://dx.doi.org/10...
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https://research.cha...
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https://doi.org/10.1...
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Abstract
Subject headings
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- We present Non-Equilibrium Molecular Dynamics (NEMD) simulations of shock wave compression along the [001] direction in monocrystalline Tantalum, including pre-existing defects which act as dislocation sources. We use a new Embedded Atom Model (EAM) potential and study the nucleation and evolution of dislocations as a function of shock pressure and loading rise time. We find that the flow stress and dislocation density behind the shock front depend on strain rate. We find excellent agreement with recent experimental results on strength and recovered microstructure, which goes from dislocations to a mixture of dislocations and twins, to twinning dominated response, as the shock pressure increases.
Subject headings
- NATURVETENSKAP -- Fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences (hsv//eng)
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Keyword
- Tantalum
- Shocks
- Molecular dynamics
Publication and Content Type
- art (subject category)
- ref (subject category)
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- By the author/editor
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Tramontina, Dieg ...
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Erhart, Paul, 19 ...
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Germann, Timothy
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Hawreliak, James
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Higginbotham, An ...
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Park, Nigel
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show more...
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Ravelo, Raman
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Stukowski, Alexa ...
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Suggit, Mathew
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Tang, Yizhe
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Wark, Justin
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Bringa, Eduardo
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Other Physics To ...
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Physical Science ...
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and Condensed Matter ...
- Articles in the publication
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High Energy Dens ...
- By the university
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Chalmers University of Technology