====== THNL-P ======
===== Description =====
Thermal conduction constitutive law for a bar element at variable temperature
==== The model ====
This law is only  used for non linear thermal analysis of isotropic solids. \\
\\
This constitutive law takes account of heat transfer by conduction and heat accumulation in solids, the conductivity and heat capacity of which depend on temperature. \\
\\ This law is used for one dimensional flow.

==== Files ====
Prepro: LTHNLP.F \\
===== Availability =====
|Plane stress state| YES |
|Plane strain state| YES |
|Axisymmetric state| YES |
|3D state| YES |
|Generalized plane state| YES |
===== Input file =====
==== Parameters defining the type of constitutive law ====
^ Line 1 (2I5, 60A1)^^
|IL|Law number|
|ITYPE| 106 |
|COMMENT| Any comment (up to 60 characters) that will be reproduced on the output listing|

==== Integer paramaters ====
^Line 1 (2I5)^^
|NTEMP|number of temperatures at which material data are given|
|IENTH|= 0 to use the classical formulation of the heat problem|
|:::|= 1 to use the enthalpy formulation of the heat problem|

==== Real parameters ====
^ Line 1 (G10.0) ^^
|AREA|cross section of the bar|
^Line 2 (3G10.0) - Repeated NTEMP times^^
|T|Temperature|
|ALAMB|heat conductivity at temperature T|
|RHOC|heat capacity per unit volume at temperature T|
===== Stresses =====
==== Number of stresses ====
2
==== Meaning ====
|SIG(1)|conductive flow along the bar|
|SIG(2)|energy accumulated by heat capacity|

===== State variables =====
==== Number of state variables ====
1
==== Meaning ====
|Q(1)| = 0 (meaningless)|