Rigid Links
A rigid link is an element between 2 nodes with a given bending stiffness and axial stiffness.
Connection Types
Fully Fixed
Tx=A(Absolute), Ty=A, Tz=A, Rx=A, Ry=A, Rz=A.
Hinge
Tx=A, Ty=A, Tz=A. There is no transfer possible between moments, only shear force and normal force. (That is the default setting)
Tension Only / Compression Only
TX=P: Tensile forces (positive normal forces) only can be transferred.
TX=N: Compression forces (negative normal forces) only can be transferred.
Springer Connection
You can also add a rigid link with a springer connection. Tx=S(Spring), Ry=S en/of Rz=S. You also need to insert the spring constant Kx, Cy and/or Cz in kN/m resp. kNm/rad