/HEAT/MAT
Block Format Keyword Describes thermal parameters for a given material in order to compute temperature evaluation.
Thermal conductivity is defined from $k=A+B.T$ .
Thermal diffusivity is $\alpha =k/{\rho}_{0}{C}_{p}$ .
Format
(1)  (2)  (3)  (4)  (5)  (6)  (7)  (8)  (9)  (10) 

/HEAT/MAT/mat_ID/unit_ID  
T_{0}  $\rho {\text{\hspace{0.05em}}}_{0}{C}_{p}$  A_{S}  B_{S}  
T_{melt}  A_{L}  B_{L}  EFRAC 
Definition
Field  Contents  SI Unit Example 

mat_ID  Material identifier. (Integer, maximum 10 digits) 

unit_ID  Unit Identifier. (Integer, maximum 10 digits) 

T_{0}  Initial temperature (1st
part). Default = 300K (Real) 
$\left[\text{K}\right]$ 
$\rho {\text{\hspace{0.05em}}}_{0}{C}_{p}$  (Mandatory) Specific heat per unit
volume at constant pressure. (Real) 
$\left[\frac{\text{J}}{{\text{m}}^{3}\cdot \text{K}}\right]$ 
A_{S}  Thermal conductivity coefficient A for
solid phase. (Real) 
$\left[\frac{\text{W}}{\text{m}\cdot \text{K}}\right]$ 
B_{S}  Thermal conductivity coefficient B for
solid phase. (Real) 
$\left[\frac{\text{W}}{\text{m}\cdot {\text{K}}^{2}}\right]$ 
T_{melt}  Temperature of melting point. Default = 10^{20} (Real) 
$\left[\text{K}\right]$ 
A_{L}  Thermal conductivity coefficient A for
liquid phase. (Real) 
$\left[\frac{\text{W}}{\text{m}\cdot \text{K}}\right]$ 
B_{L}  Thermal conductivity coefficient B for
liquid phase. (Real) 
$\left[\frac{\text{W}}{\text{m}\cdot {\text{K}}^{2}}\right]$ 
EFRAC  Fraction of strain energy converted into
heat. Default = 1. (Real) 
Example (Thermal)
#RADIOSS STARTER
#12345678910
# 1. MATERIALS:
#12345678910
/UNIT/1
unit for mat
Mg mm s
#12345678910
/MAT/PLAS_JOHNS/1/1
Steel
# RHO_I
7.8E9 0
# E Nu
210000 .3
# a b n EPS_p_max SIG_max0
270 450 .6 0 0
# c EPS_DOT_0 ICC Fsmooth F_cut Chard
0 0 0 0 0 0
# m T_melt rhoC_p T_r
0 0 0 0
/HEAT/MAT/1/1
# T0 RHO0_CP AS BS
273 3.588 19.0 0
# Blank card
/THERM_STRESS/MAT/1/1
# func_IDT Fscale_y
1003 0
#12345678910
# 2. FUNCTIONS:
#12345678910
/FUNCT/1003
linear expansion coefficient funtion of temperature
# X Y
273 1.2E5
800 1.2E5
#12345678910
#enddata
#12345678910
Comments
 This option overwrites any duplicated parameter from material law.
 This option is available for all material laws;
except the following:
LAW0, 5, 6, 11, 21, 26, 37, 41, 46, 51, 54, 97, 108, 113, 151, /MAT/BKEPS, /MAT/KEPS, and /MAT/GAS
 This option is compatible with equations of state, /EOS, only when used with the following materials: LAW3, 4, 12, and 49
 This option is available for:
 Shell elements formulations; except DKT18 and T6
 Solid elements formulations; except PA6
 A
_{L} and B_{L}
are used only for ALE solving.
 Over melting point T_{melt}:
(1) $$k={A}_{L}+{B}_{L}.T$$  In other cases:
(2) $$k={A}_{S}+{B}_{S}.T$$
 Over melting point T_{melt}:
 Coupling between ALE and Lagrangian solving is currently not available.