====== JOIN2 ======
Junction between plane shell and solid
===== Description =====
Element for mechanical analysis with plane shells in generalized plane state ([[:prepro#remark_on_ntana|NTANA]]=7, IANA=5). \\
\\
Junction element allowing the simultaneous use of plane shells ([[elements:kirsh|KIRSH]], [[elements:minds|MINDS]]) and solid elements ([[elements:plxls|PLXLS]], [[elements:jet2d|JET2D]], ...) connected together in generalized plane state. \\
\\
The element consists in the assembling of several sub-elements (up to 10) whose interpolation, on the solid side, is either parabolic or linear. \\
\\
The numerical integration is performed with 2 Gauss points for parabolic sub-elements, and 1 Gauss point for linear sub-elements. \\
\\
The numbering of nodes follows the order given in the figure below. The first node is always the node of the shell.
{{:elements:join2.png|}}
Type: 43 \\
Implemented by: L. Grisard, 1991
==== Files ====
Prepro: JOIN2A.F \\
Lagamine: JOIN2B.F

===== Input file =====
^Title (A5)^^
|TITLE|"JOIN2" in the first 5 columns|
^Control data (I5)^^
|NELEM|Number of junction elements|
^Definition of the elements (3I5)^^
|NELMS|Number of sub-elements (0 ≤ NELMS ≤ 10)|
|INTYP|Degree of interpolation of the sub-elements (= 1 or 2)|
|LMATE|Material law|
^Nodes of the element (14I5)^^
|NODES(K) \\ K=1,2+INTYP*NELMS|Nodes of the element; the first node is always the shell node|