Select a harmonic analysis case, select Analysis > Analysis Type and click Parameters, or click OK in the New Case dialog to define the harmonic analysis parameters for each new dynamic case in a structure. It can also be called up by changing the structure analysis type to harmonic analysis.

NoteTo define harmonic and harmonic in the frequency domain (FRF) analysis types, *you need to define modal analysis first*. Otherwise, these analysis types are not available.

Mass Matrix and Excitation harmonic analysis parameters may be selected for the load Case.

You can select the following mass matrix types:

- Consistent (complete matrix - always with regard to rotational degrees of freedom).
- Lumped with rotations (diagonal matrix - with regard to rotational degrees of freedom).
- Lumped without rotations (diagonal matrix without rotational degrees of freedom).

The Acceleration field and the standard buttons OK, Cancel and Help are located in the lower part of the dialog.