| Attributes |
| Type |
beam element |
| Physical property |
Rigid Body Motion Property |
| Mesh connectivity |
BAR |
| Number of nodes |
2 (1 master, 1 slave) |
| Degrees of freedom
(per node) |
6 (3 translations and 3 rotations) |
| Type of behavior |
kinematics |

The degrees of freedom of the master node (N1)
are linked to the degrees of freedom of the slave node (N2)
according to rigid-body equations.
As a consequence, the displacement of the slave node depends to the
rigid-body motion.
Any direction can be relaxed in the rigid-body equations.If there is more that one slave node, this rigid beam
element becomes the traditional Rigid Spider element.