====== CORA3 ======
===== Description =====
3-dimensional boundary. The element has 8 "real" nodes and 1 node representing the environment. It models convection and radiation between the structure and the environment. \\ This element can only be used with the law [[laws:raco|RACO]]. \\
{{ :elements:cora3.png?300|}}
Type: 114 \\
Implemented by: S. Cescotto, 1986
==== Files ====

Prepro: CORA3A.F \\
Lagamine: CORA3B.F
===== Input file =====

^ Line 1 (A5)^^
|TITLE|"CORA3" in the first five columns|
^ Line 2 (I5) ^^
|NELEM|Number of elements|
^Element definition (3I5/9I5) repeated NELEM times^^
|NNODE|Number of nodes (5 ou 9)|
|NINTE| Number of integration points (4 or 9)|
|LMATE| Material law|
|NODES(5 or 9)| List of nodes |

===== Results =====
Sigma: total flux (convection + radiation)