29.47 Eos object

The Eos object specifies an equation of state model.

Access

import material
mdb.models[name].materials[name].eos
import odbMaterial
session.odbs[name].materials[name].eos

29.47.1 Eos(...)

This method creates an Eos object.

Path

mdb.models[name].materials[name].Eos
session.odbs[name].materials[name].Eos

Required arguments

None.

Optional arguments

type

A SymbolicConstant specifying the equation of state. Possible values are USUP, JWL, IDEALGAS, TABULAR, and IGNITIONANDGROWTH. The default value is IDEALGAS.

temperatureDependency

A Boolean specifying whether the data in gasSpecificTable depend on temperature. The default value is OFF.

dependencies

An Int specifying the number of field variable dependencies for the data in gasSpecificTable. The default value is 0.

detonationEnergy

A Float specifying the detonation energy text field. The default value is 0.0.

solidTable

A sequence of sequences of Floats specifying the following:
$A_{s}$.
$B_{s}$.
${\omega}_{s}$.
$R_{1s}$.
$R_{2s}$.
The default value is an empty sequence.

gasTable

A sequence of sequences of Floats specifying the following:
$A_{g}$.
$B_{g}$.
${\omega}_{g}$.
$R_{1g}$.
$R_{2g}$.
The default value is an empty sequence.

reactionTable

A sequence of sequences of Floats specifying the following:
Initial Pressure, $I$.
Product co-volume, $a$.
Exponent on the unreacted fraction (ignition term), $x$.
First burn rate coefficient, $G_{1}$
Exponent on the unreacted fraction (growth term), $c$.
Exponent on the reacted fraction (growth term), $d$.
Pressure exponent (growth term), $y$.
Second burn rate coefficient, $G_{2}$.
Exponent on the unreacted fraction (completion term), $e$.
Exponent on the reacted fraction (completion term), $g$.
Pressure exponent (completion term), $z$.
Initial reacted fraction, ${F^{max}}_{ig}$.
Maximum reacted fraction for the growth term, ${F^{max}}_{G1}$.
Minimum reacted fraction, ${F^{min}}_{G2}$.
The default value is an empty sequence.

gasSpecificTable

A sequence of sequences of Floats specifying the following:
Specific Heat per unit mass.
Temperature dependent data.
Value of first field variable.
Value of second field variable.
Etc.
The default value is an empty sequence.

table