1887
banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
Microstructure effects on shock response of Cu nanofoams
Rent:
Rent this article for
USD
10.1063/1.4818487
/content/aip/journal/jap/114/7/10.1063/1.4818487
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/7/10.1063/1.4818487
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

Unit configurations of columnar Cu nanofoams, created from a {100} single crystal or columnar nanocrystalline Cu, and projected along the -axis (: [100], : [010], and : [001]). The numbers denote configuration types 1–8. For types 7 and 8, color coding refers to a specific grain from which a columnar pore is created; neighboring grains are rotated by 30°. Grain boundaries are inherent in type 8 nanofoams.

Image of FIG. 2.
FIG. 2.

The profiles for type-2 nanofoam shock loaded at and 2 km s, showing a two-wave and a single-wave structure, respectively. The values for the former are multiplied by 2. Shock direction: left → right.

Image of FIG. 3.
FIG. 3.

The stress ( ), shock velocity ( ), and particle velocity ( ) of the elastic precursor for different foam types. The values in (b) are multiplied by 10.

Image of FIG. 4.
FIG. 4.

The Hugoniot states for different types of nanofoams shocked at and 2 km s. Experiment results, full density Hugoniot, compacted Hugoniot, and a model fit are also included for comparison.

Image of FIG. 5.
FIG. 5.

Void collapse: snapshots of atomic configurations (projected onto the -plane) for . The numbers denote foam types. Grain boundary formation or deformation is seen for types 7 and 8. Color-coding is based on . Shock direction: left → right.

Image of FIG. 6.
FIG. 6.

Internal jetting: snapshots of atomic configurations (projected onto the -plane) for . The numbers denote foam types. Color-coding is based on . Shock direction: left → right.

Image of FIG. 7.
FIG. 7.

Internal jetting: vector plots of the distribution of velocity projected onto the -plane for different types of foams shocked at . The snapshots are for ∼ 90 ps. Numbers denote foam types. Shock direction: left → right.

Image of FIG. 8.
FIG. 8.

Evolution of internal jetting and initiation of free surface jetting: vector plots of the distribution of velocity projected onto the -plane for the type-3 foam loaded at . Shock direction: left → right.

Image of FIG. 9.
FIG. 9.

Free surface jetting: snapshots of atomic configurations (projected onto the -plane) for . A quasi-steady state is achieved except for the case of type 4. The numbers denote foam types. Atoms are color-coded with in km s. Shock direction: left → right.

Image of FIG. 10.
FIG. 10.

Free surface jetting: vector plots of the distribution of velocity projected onto the -plane(a, b, d–f), and an atomic configuration (c) for , showing cavity nucleation in jet heads. The snapshots are for  = 105–114 ps. (c) is colored by potential energy, and corresponds to (d). Shock direction: left → right.

Image of FIG. 11.
FIG. 11.

Free surface vaporization: snapshots of atomic configurations (a; projected onto the -plane) and the corresponding 2D binning density profiles (b) for the type-4 foam loaded at . Color coding is based on in (a) and density in (b). Shock direction: left → right.

Loading

Article metrics loading...

/content/aip/journal/jap/114/7/10.1063/1.4818487
2013-08-15
2014-04-16
Loading

Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Microstructure effects on shock response of Cu nanofoams
http://aip.metastore.ingenta.com/content/aip/journal/jap/114/7/10.1063/1.4818487
10.1063/1.4818487
SEARCH_EXPAND_ITEM