Creates RBE2 (Nastran/OptiStruct) or KINCOUP (Abaqus) elements
for the head and the body.
Restriction: Available in Abaqus, Nastran, and OptiStruct.
There are two individual RBE2/KINCOUP elements at the head of the connection, one to
connect to the inner row of nodes, the other to connect to the washer layer nodes. The
connector location can either 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. Figure 1.
