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Multiscale modelling on the shock-induced chemical reactions of multifunctional energetic structural materials
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10.1063/1.4803712
/content/aip/journal/jap/113/17/10.1063/1.4803712
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4803712

Figures

Image of FIG. 1.
FIG. 1.

Illustration of the multiscale modelling approach on the SICR of MESMs.

Image of FIG. 2.
FIG. 2.

Illustration of the homogenization method.

Image of FIG. 3.
FIG. 3.

A mesoscale numerical model (a) Al/PTFE (44.5/55.5 vol. %) (b) Al/W/PTFE (22.25/22.25/55.5 vol. %) [(yellow) Al granules, (gray) W granules, and (pink) PTFE].

Image of FIG. 4.
FIG. 4.

Initial loading and boundary conditions applied to a numerical model.

Image of FIG. 5.
FIG. 5.

The deformation morphology under different impact velocities. Upper:Al/PTFE (44.5/55.5 vol. %), Lower: Al/W/PTFE (22.25/22.25/55.5 vol. %). [(yellow) Al granules, (gray) W granules, and (pink) PTFE].

Image of FIG. 6.
FIG. 6.

The temperature distribution under different impact velocities. Upper: Al/PTFE (44.5/55.5 vol. %) and Lower: Al/W/PTFE (22.25/22.25/55.5 vol. %).

Image of FIG. 7.
FIG. 7.

The pressure distribution under different impact velocities. Upper: Al/PTFE (44.5/55.5 vol. %) and Lower: Al/W/PTFE (22.25/22.25/55.5 vol. %).

Image of FIG. 8.
FIG. 8.

Mesoscale numerical model in cells (a) Al/PTFE (44.5/55.5 vol. %), (b) Al/W/PTFE (22.25/22.25/55.5 vol. %) [(yellow) Al granules, (gray) W granules, and (pink) PTFE].

Image of FIG. 9.
FIG. 9.

Sketch of the specific region (a) Al/PTFE (44.5/55.5 vol. %) (b) Al/W/PTFE (22.25/22.25/55.5 vol. %) [(yellow) Al granules, (gray) W granules, and (pink) PTFE].

Image of FIG. 10.
FIG. 10.

Illustration of the unit cell homogenization method.

Image of FIG. 11.
FIG. 11.

The temperature rise for the specific cells under different impact velocities. Left: Al/PTFE (44.5/55.5 vol. %) Right: Al/W/PTFE (22.25/22.25/55.5 vol. %).

Image of FIG. 12.
FIG. 12.

The pressure rise for the specific cells under different impact velocities. Left: Al/PTFE (44.5/55.5 vol. %) Right: Al/W/PTFE (22.25/22.25/55.5 vol. %).

Image of FIG. 13.
FIG. 13.

Extent of reaction versus temperature for Al/W/PTFE mixtures.

Image of FIG. 14.
FIG. 14.

The extent of chemical reaction for the specific cells under different impact velocities. Left: Al/PTFE (44.5/55.5 vol. %) Right: Al/W/PTFE (22.25/22.25/55.5 vol. %).

Image of FIG. 15.
FIG. 15.

The temperature rise by chemical reaction for the specific cells under different impact velocities. Left: Al/PTFE (44.5/55.5 vol. %) Right: Al/W/PTFE (22.25/22.25/55.5 vol. %).

Image of FIG. 16.
FIG. 16.

The total temperature after chemical reaction for the specific cells under different impact velocities. Left: Al/PTFE (44.5/55.5 vol. %) Right: Al/W/PTFE (22.25/22.25/55.5 vol. %).

Image of FIG. 17.
FIG. 17.

The pressure rise for the specific cells under different impact velocities. Left: Al/PTFE (44.5/55.5 vol. %) and Right: Al/W/PTFE (22.25/22.25/55.5 vol. %).

Image of FIG. 18.
FIG. 18.

The total pressure after chemical reaction for the specific cells under different impact velocities. Left: Al/PTFE (44.5/55.5 vol. %) and Right: Al/W/PTFE (22.25/22.25/55.5 vol. %).

Image of FIG. 19.
FIG. 19.

The equilibrium temperature for the two mixtures under different impact velocities.

Image of FIG. 20.
FIG. 20.

The total energy released for the two mixtures under different impact velocities.

Tables

Generic image for table
Table I.

Details of the Al/W/Binder simulation schemes.

Generic image for table
Table II.

EOS parameters of the materials.

Generic image for table
Table III.

Parameters of strength models of the materials.

Generic image for table
Table IV.

The moments selected for each case.

Generic image for table
Table V.

Reaction parameters for the Al/PTFE and Al/W/PTFE mixtures.

Generic image for table
Table VI.

Heat capacity parameters for the Al/PTFE and Al/W/PTFE mixtures.

Generic image for table
Table VII.

The material parameters of the Al/PTFE and Al/W/PTFE mixtures related to the pressure rise calculations of SICR.

Generic image for table
Table VIII.

The calculated SICR result for the Al/PTFE and Al/W/PTFE mixtures.

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/content/aip/journal/jap/113/17/10.1063/1.4803712
2013-05-07
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Multiscale modelling on the shock-induced chemical reactions of multifunctional energetic structural materials
http://aip.metastore.ingenta.com/content/aip/journal/jap/113/17/10.1063/1.4803712
10.1063/1.4803712
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