domega#

Inertia.domega(domgx='', domgy='', domgz='', **kwargs)#

Specifies the rotational acceleration of the structure.

Mechanical APDL Command: DOMEGA

Parameters:
domgxstr

Rotational acceleration of the structure about the global Cartesian X, Y, and Z axes.

domgystr

Rotational acceleration of the structure about the global Cartesian X, Y, and Z axes.

domgzstr

Rotational acceleration of the structure about the global Cartesian X, Y, and Z axes.

Notes

Specifies the rotational acceleration of the structure about each of the global Cartesian axes. Rotational accelerations may be defined in these analysis types:

  • Static ( antype,STATIC)

  • Harmonic ( antype,HARMIC) – full, VT [ DOMEGA_FN_VT_KRY ], Krylov [ DOMEGA_FN_VT_KRY ], or mode-superposition [ DOMEGA_mode-sup_LoadSupport ]

  • Transient ( antype,TRANS) – full or mode-superposition [ DOMEGA_mode-sup_LoadSupport ]

  • Substructuring ( antype,SUBSTR)

  • Modal ( antype,MODAL)

Loads for VT and Krylov methods are supported as long as they are not:

  • complex tabulated loads (constant or trapezoidal loads in tabulated form are supported)

  • used in conjunction with Rotordynamics ( coriolis,on).

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.

See Acceleration Effect 2.

The domega command supports tabular boundary conditions (TABNAME_X, TABNAME_Y, and TABNAME_Z) for DOMEGA_X, DOMEGA_Y, and DOMEGA_Z input values ( dim ) for full transient and harmonic analyses.

Related commands are acel, cgloc, cgomga, dcgomg, and omega.

See Analysis Tools

This command is also valid in PREP7.