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Dynamic strength of metals in shock deformation
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View: Figures


Image of FIG. 1.
FIG. 1.

(Color) plots of the spatial and temporal distributions of (a) density, (b) pressure, (c) temperature, and (d) equivalent stress, for aluminum with dislocation loops and shocked with a piston pressure of . The horizontal axes are in units of nanometers and the vertical axes are in units of picoseconds.

Image of FIG. 2.
FIG. 2.

(Color) Hugoniot of aluminum free of defects, with prismatic dislocation loops, voids, or helium bubbles, as obtained from the molecular dynamics (MD) simulations. The solid curve is the experimentally determined Hugoniot.

Image of FIG. 3.
FIG. 3.

(Color) Steady temperature reached behind the shock front. The solid curve is a fit to the results from the defect-free samples, and the dashed curve is calculated from the experimentally determined equation of state.

Image of FIG. 4.
FIG. 4.

(Color) The dynamic strength obtained from simulations, and shown enclosed in boxes, compared with experimental values that fall roughly between the curves. Cells with helium bubbles of twice and four times the length were also used.


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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Dynamic strength of metals in shock deformation