====== CNCAS ======
Coupled contact for continuous casting
===== Description =====
{{  :elements:cntcp.png?400|}}
The element has 2 or 3 nodes (linear or parabolic) and is related to a foundation. \\ \\
Convention: when the element is considered in increasing order of nodes (1 → 2 → 3), the first body is to the left, and the foundation to the right. \\ \\
This element can be used with law [[laws:couc|COU2DC]] as it includes friction and thermal exchange by radiation-convection or with thermal resistance. \\ \\
This element also uses law [[laws:bocha|BOCHA]]: it is indeed necessary to know the speed perpendicular to the studied plane (casting speed). \\ \\

Type: 215 \\
Implemented by: F. Pascon (1998)
==== Files ====
Prepro: CNCASA.F \\
Lagamine: CNCASB.F

===== Input file =====
^Title (A5)^^
|TITLE|"CNCAS" in the first 5 columns|
^Control data (A5)^^
|NELEM|Number of elements|
^Definition of the elements (5I5/3I5)^^
|NINTE|Number of integration points (1 to 10, 5 max can be drawn by DESFIN - recommanded value: 2)|
|LMAT1|Constitutive law number|
|IFOND|Number of the foundation or tool \\ If the foundation number is equal to 0, the boundary thermal flow is calculated with the ambient, without mechanical contact with any foundation.|
|INTYP|Type of numerical integration (recommanded value: 0) \\ 0 → Gauss \\ 1 → Lobatto \\ 2 → Newton-Cote|
|LMAT2|[[laws:bocha|BOCHA]] law number|
|NODES|List of nodes (2 or 3)|
===== Results =====
Stresses: pressure, tangent stress, thermal flux \\ \\
Internal variables: The first values are the ones relating to the law (for Coulomb law, this will be: plasticity indicator, dissipation, information on mechanical dissipation in thermal flow). The 6 last values correspond to the contact geometry. They are: \\
  * The segment number of the foundation in contact
  * The interpenetration distance
  * The jacobian
  * NOCO the contact indicator given by CALFON
  * The relative tangent rate (in the X,Y plane)
  * The thickness