SACS v5.3 fatigue analysis (warnings questions)

Hi.

I have been trying to make a fatigue analysis and I have some problems with the results of the analysis. First, when I make the dynamic analysis to extract modes and shapes, the result gives me a warning of no unity check option selected. what does it mean and how can I fix it?

then when I make the wave transfer/respond function generation analysis, again the result gives me another warning.
And when I make the fatigue spectral analysis the result gives me a warning of postfile title.
I would appreciate if anyone can help me to solve these problems.
regards
  • We would need look at your run file and input file to determine the reason for the unity check warnings during your modal analysis.
    For transfer function generation, the equations of motion are solved by representing the applied load a a Fourier series. The warning messages indicate the difference between the actual applied load and its Fourier series representation. A small % error is usually acceptable, however the user should look at the actual magnitude of the load to determine acceptability.


    This is a test