| Attributes |
|---|
| Type |
spider element |
| Physical property |
Rigid Body Motion Property |
| Mesh connectivity |
SPIDER |
| Number of nodes |
1 master, n-1 slaves |
| 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 each slave node (N2 to
Nn) according to rigid-body equations.
As a consequence, the displacements of the slave nodes are linked among
themselves according to rigid-body motion.
Any direction can be relaxed in the rigid-body equations.
If there is only one slave node, this rigid spider element
becomes the traditional Rigid Beam element.