rock

Mapdl.rock(cgx='', cgy='', cgz='', omx='', omy='', omz='', **kwargs)

Specifies a rocking response spectrum.

APDL Command: ROCK

Parameters
  • cgx – Global Cartesian X, Y, and Z location of center of rotation about which rocking occurs.

  • cgy – Global Cartesian X, Y, and Z location of center of rotation about which rocking occurs.

  • cgz – Global Cartesian X, Y, and Z location of center of rotation about which rocking occurs.

  • omx – Global Cartesian angular velocity components associated with the rocking.

  • omy – Global Cartesian angular velocity components associated with the rocking.

  • omz – Global Cartesian angular velocity components associated with the rocking.

Notes

Specifies a rocking response spectrum effect in the spectrum (ANTYPE,SPECTR) analysis.

The excitation direction with rocking included is not normalized to one; rather, it scales the spectrum. For more information, see Participation Factors and Mode Coefficients.

This command is also valid in PREP7.