Published November 1, 2008
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Journal Article
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Shear stresses in shock-compressed diamond from density functional theory
Abstract
We report density functional theory (DFT) results for the shear stresses of uniaxially compressed diamond under conditions corresponding to strong shock wave compression. A nonmonotonic dependence of shear stresses on uniaxial strain was discovered in all three low-index crystallographic directions: <100>, <110>, and <111>. For <100> compression the shear stress even becomes negative in the region near the minimum of the shear stress-strain curve. The DFT results suggest that anomalous elastic regime observed in recent molecular dynamics shock simulations is a real phenomenon caused by a significant delay or even freezing of the plastic response.
Additional Information
© 2008 The American Physical Society. (Received 9 September 2008; published 20 November 2008) This work was supported by the U.S. Office of Naval Research (ONR) both directly and through the Naval Research Laboratory (NRL). The computations were performed using NSF Teragrid computational facilities (Grant No. TG-DMR070018N).Attached Files
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Additional details
- Eprint ID
- 12414
- Resolver ID
- CaltechAUTHORS:OLEprb08
- Office of Naval Research
- Naval Research Laboratory
- Created
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2008-11-25Created from EPrint's datestamp field
- Updated
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2021-11-08Created from EPrint's last_modified field