Using the Export Optimization Deck panel, you can export the
solver deck and also perform Fourier Transformation if required.
Below is the Export Optimization Deck task panel-Figure 1.
Select required type from Windowing type list.
Enter a value for No. Of Blocks.
Enter percentage value for Overlap (%).
Click .
A file browser will appear. Browse and select the required folder.
Click Export.
This will export the optimization solver deck to the selected folder. Once the
export is complete, an user message will appear to navigate the exported
location.
Export Solver Deck Options
Windowing Type
A typical modal transient run is a time based analysis. For optimizing
the E-line for systematic or a non-systematic optimization problem in
the frequency domain, we need to convert the time domain data in the
input deck to the frequency domain.
Altair
Compose takes care of this conversion in the back
end using some of the basic inputs required for the FFT (Fast Fourier
transform).
Based on the type of windowing option in time to frequency conversion,
the default parameters automatically populate.
Hanning
This window function has a sinusoidal shape and results in
wide peak but low side lobes.
Touches zero at both ends eliminating all
discontinuity.
This is satisfactory in 95 percent of cases.
Uniform
Is also called No Window or Rectangular Window.
The signal is convolved with a rectangular-shaped window of
uniform height, by the nature of taking a snapshot in time
of the input signal and working with a discrete signal. This
convolution has a sine function characteristic
spectrum.
Number of Blocks
Perform a block based FFT where the signal is processed by breaking it
into given no of blocks and suitable windowing technique is used to
reduce the effects of the leakage.
Overlap (%)
Overlap percentage is also a measure to reduce the truncation effects.
The overlapping windows with suitable windowing type like hanning or
uniform helps in providing smooth transition from one block to the
next.
Figure 1. 
.
A file browser will appear. Browse and select the required folder.