Displays the orbital motion of a rotating structure



When a structure is rotating and the Coriolis or gyroscopic effect is taken into account (CORIOLIS), nodes lying on the rotation axis generally exhibit an elliptical orbital motion. The PLORB command displays the orbit of each rotating node as well as the deformed shape at time t = 0 (the real part of the solution).

To print the characteristics of the orbital path traversed by each node, issue the PRORB command.

The PLORB command is valid for line elements (such as BEAM188, BEAM189, PIPE288, and PIPE289).

Your model must also involve a rotational velocity (OMEGA or CMOMEGA) with Coriolis enabled in a stationary reference frame (CORIOLIS,,,,RefFrame = ON).

A SET command should be issued after PLORB to ensure proper output for subsequent postprocessing commands.

The coordinate system for displaying nodal results must be global Cartesian (RSYS,KCN = 0).