Note:   The FRF Calculator result can be added under Modal Analyses (Modal, Coupled Field Modal or Modal Acoustics). It also can be added under Harmonic Analysis. If Initial Conditions are defined, mode shapes are read from Modal Analysis. For Standalone Harmonic Analysis, you must define Solution Method as Mode Superposition and On Demand Expansion to Yes.

Note:  The FRF Calculator is valid under both Undamped and Damped Modal Analyses. If the Analysis is Damped, however, the FRF Calculator is only supported with the Reduced Damped Solver, and the Complex Solutions must be stored.

Note:  The FRAC calculator feature is removed from the current release. The methodology adopted for FRAC calculation in previous releases has some drawbacks as per research literature. Work on implementing improved methodologies is in progress and this feature will be available again in a future release.