Additional Frequencies

Use the Additional Frequencies form to specify additional frequencies at which the response is to be calculated for a Steady-State or Power-Spectral-Density Load case. Only frequencies between the first and last frequency specified for the load case will actually be used. Additional frequencies outside that range will be ignored.

Click the Analysis > Type > Power Spectral Density > New command to display the Load Case Data - Power Spectral Density form; click the Set Additional Frequencies button to display the Additional Frequencies form.

The use of this option is strongly recommended, even for models without damping.