Creates KINCOUP elements for the head and B31 element for the body.
Restriction: Only available in Abaqus.
The rot x degree of freedom is constrained. The head elements project and connect to the
nodes of the adjoining shell elements that form the hole, and also to the second row of
nodes to form the washer layer. The connector location can be on the edge of the hole,
center of the hole, midpoint in between the two holes, or on the second row of nodes
which form the washer layer.
This connector uses the script prop_abaqus_b31.tcl. Figure 1.
