Use the Harmonic Perturbation subnode to specify the harmonic part of nonzero prescribed displacements. This node is used if the study step is frequency response of a perturbation type.

The settings are the same as in the parent Prescribed Displacement/Rotation, Prescribed Velocity, Prescribed Acceleration, or Rigid Connector node. Only degrees of freedom selected as prescribed in the parent node can be assigned a value.

For Prescribed Displacement/Rotation a rotational harmonic part can only be assigned if in the parent node the rotation type (defined in the By list) is set to Rotation.

Physics tab with Prescribed Displacement/Rotation, Prescribed Velocity, Prescribed Acceleration, or Rigid Connector node selected in the model tree: