Physics – Condensed Matter – Materials Science
Scientific paper
2011-02-17
Physics
Condensed Matter
Materials Science
10 pages, 13 figures, submitted to Phys. Rev. E
Scientific paper
The compression of a low-density copper foam was simulated with a radiation, hydrodynamics code. In one simulation, the foam had a density of $\rho_0 = 1.3407$ g/cm$^3$, 15% the density of copper at standard temperature and pressure, and was composed of a tangle of standard density cylindrical copper filaments with a diameter of $4.0\times10^{-7}$ cm. In another simulation, the foam was a uniform material at the same density. The propagation velocity of the shock wave ($U_f$) through the foam was measured and compared with experimental results. The simulations show approximately the same agreement with experimental results for $U_f$ and agreed with estimates from different equations of state and simulations using molecular dynamics. Behavior of the foam ahead of the shock wave is also discussed where the porous nature of the foam allows for the formation of a vapor precursor.
Dittrich Thomas
Duchaineau M. A.
Elliott James B.
Hamza Alex V.
Macri R.
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