Periodic Condition

Periodic Condition element is a two-nodes element.

Type	Lineic element
Physical property	periodic
Mesh connectivity	BAR
Number of nodes	2
Degrees of freedom (per node)	6 (3 translations and 3 rotations)
Type of behavior	kinematics

The displacements of the node N2 are equal to the transformation of the displacements of the node N1.

If the two plans are not parallel, the 3D transformation is a rotation.

If the two plans are parallel, the 3D transformation is a translation. In this case, the Periodic Condition becomes the traditional Rigid Beam element and the displacements of the node N2 are equal to the displacement of the node N1.