The Periodic command requires connector(s) and/or domain(s) to be selected prior to being available. This commands creates, through translation or rotation, a periodic copy of each selected entity if applicable.

Periodic Menu
The Periodic submenu is used to specify how a periodic connector or domain should be created.

Once created, the periodic connector (or domain) and the original counterpart become slaved periodically. That is, any future changes to one of them (i.e., transformation, redimension, redistribution, etc.) will be reflected in its twin. The only exception to this is the display attributes of a periodic pair can be different.

Note that the Periodic command is only available when the original selection does not have a periodic twin. This is because the periodicity is enforced in pairs: no more than two connectors or two domains may be periodic with each other.

The periodicity information is available in the List panel through entity names. As shown in Figure 8.80, in parentheses next to each periodic connector are a periodic tag and a name indicating its twin. If either of these two connectors is deleted (or joined), the periodicity will be broken immediately and the other will remain in place.

Periodic List Names
Periodicity is reflected in the names of a slaved pair in the List panel.

To facilitate the selection of periodic entities in a grid system, check the Periodic check box in the Mask panel. This creates a pick mask such that only periodic entities may be selected.

Periodic Mask
Check the Periodic check box in the Mask panel to allow only periodic entities to be selected.

Note that the Periodic command does not automatically assign a periodic boundary condition to a periodic pair of domains (3D) or connectors (2D). Periodic boundary conditions must be set via the CAE, Set Boundary Conditions command.

For more on the Periodic command, choose a topic below: