Modal FRF - Define Loads

After selecting the modes from the Define Modes tab, select nodes at which unit excitations or actual excitations can be applied.

Select nodes and activate DOFs for applying excitations.
Unit Input
Generates sensitivity subcases with unit excitations at selected nodes. The number of subcases is equal to the number of selected nodes multiplied by the DOFs.
Defines external excitations using the CSV, solver deck, and test UNV file. This generates a general FRF subcase with defined excitations.
Table name
Enter the name for the external excitations defined.

Figure 1. NVH Utilities Browser - Modal FRF - Model tab/Define Loads subtab