Multiphase equation of state for iron

Equations of state for Be, Ni, W, and Au.

“…In previous work, we have obtained satisfactory results by merging calculations from the PANDA IEQ model at low densities with the INFERNO model at high densities [10] [11]. However, smoothing is required to obtain a single table that is well behaved in the transition region.…”

SWEIS Annual Review - FY2000

“…The result was = 55.0 MJ/kg. Values for the other two parameters, which are less critical, were obtained from those we previously obtained for iron [44], by scaling according to density: = 3.25, = 0.75.…”

“…We set EFAC = 1.45 MJ/kg (2.6% of the cohesive energy) to match the graphite melting line at high pressures (Section 5.2). As noted in Section 2.5, two parameters in the PANDA LJ MATCH option, which defines the behavior of the zeroKelvin isotherm in tension, were estimated from those for iron [44].…”

A shear banding model for penetration calculations

“…Using this same apparatus, perhaps by not trapping the compression wave a tensile wave can be subsequently delivered to the fully formed shear band with some controlled delay of arrival time, and evaluation of Pf*2 can thereby be investigated. Kerley (1993) simulated by means of the Eulerian CTH code (McGlaun et al, 1990) an experiment conducted by Raftenberg (Raftenberg 1994), in which a 13-mm-thick RHA plate was perforated by a copper shaped charge jet. The simulation included the generally neglected phenomenon of the a ^ e iron phase transformation (Kerley 1993), and this feature was found crucial in obtaining an accurate hole morphology, particularly at the regions of the entrance and exit faces.…”

“…Kerley (1993) simulated by means of the Eulerian CTH code (McGlaun et al, 1990) an experiment conducted by Raftenberg (Raftenberg 1994), in which a 13-mm-thick RHA plate was perforated by a copper shaped charge jet. The simulation included the generally neglected phenomenon of the a ^ e iron phase transformation (Kerley 1993), and this feature was found crucial in obtaining an accurate hole morphology, particularly at the regions of the entrance and exit faces. (However, the calculation used perfect plasticity and contained no damage model, and so was simplistic in other regards.)…”