I am trying to carry out a fatigue analysis of an offshore wind monopile structure in SACS using a spectral wave load and damage equivalent wind loads (DEWL) provided from the wind generator turbine manufacturer.
I have input these DEWLs in the SACS input file and created a Sea State file with the spectral wave load. However, I am not sure if the spectral fatigue analysis actually uses the DEWLs at all.
Should I carry out a separate deterministic fatigue analysis with the DEWLs and combine the damage with the one obtained from the fatigue spectral analysis with the spectral wave? How do I do that, if I do not know the number of occurrences of the DEWLs?
Same thing with the generated pile super element. I am not sure if SACS is using this at all in the fatigue analysis. Happy to share the input files.
Thanks and regards
Marcelo da Silva Machado
Please send SACS file on my mail id email@example.com