Specifies the rotational velocity of the structure.
Rotational velocity of the structure about the global Cartesian X, Y, and Z axes.
This command specifies the rotational velocity of the structure about each of the global Cartesian axes (right-hand rule). Rotational velocities may be defined in these analysis types:
The OMEGA command supports tabular boundary
TABNAME_Y%, and %
OMEGA_Z input values (*DIM) for full transient and harmonic analyses.
See Analysis Tools in the for more information.
If you have applied the Coriolis effect (CORIOLIS) using a stationary reference frame, the OMEGA command takes the gyroscopic damping matrix into account for the elements listed in the “Stationary Reference Frame” heading in the notes section of the CORIOLIS command. The element axis must pass through the global Cartesian origin. ANSYS verifies that the rotation vector axis is parallel to the axis of the element; if not, the gyroscopic effect is not applied. After issuing the OMEGA command when the Coriolis or gyroscopic effect is present, a subsequently issued CMOMEGA command has no effect.
In a mode-superposition harmonic or transient analysis, you must apply the load in the modal portion of the analysis. Mechanical APDL calculates a load vector and writes it to the MODE file, which you can apply via the LVSCALE command.
This command is also valid in PREP7.