MAT4

Isotropic Thermal Material Properties Definition

Description: Defines the thermal material properties for temperature-independent, isotropic materials.

Format:

Example:

Field	Definition	Type	Default
MID	Material identification number.	Integer > 0	Required
K	Thermal conductivity.	Real > 0	Required
CP	Heat capacity per unit mass at constant pressure (specific heat).	Real ≥ 0 or blank	0.0
RHO	Density.	Real ≥ 0 or blank	1.0
H	Free convection heat transfer coefficient.	Real ≥ 0 or blank	0.0
MU	Dynamic viscosity.	Real > 0 or blank	0.0
HGEN	Heat generation capability used with QVOL entries.	Real ≥ 0 or blank	1.0
REFENTH	Reference enthalpy.	Real or blank	0.0
TCH	Lower temperature limit at which phase change region is to occur.	Real or blank	0.0
TDELTA	Total temperature change range within which a phase change is to occur.	Real ≥ 0 or blank	0.0
QLAT	Latent heat of fusion per unit mass associated with the phase change.	Real > 0 or blank	0.0

Remarks:

1. The MID must be unique with respect to all other MAT4 and MAT5 entries.
2. REFENTH is the enthalpy corresponding to zero temperature if the heat capacity CP is a constant. If CP is obtained through a TABLEM lookup, REFENTH is the enthalpy at the first temperature in the table.
3. Properties specified on the MAT4 entry may be defined as temperature-dependent by use of the MATT4 entry.