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Ansys Learning Forum › Forums › Installation and Licensing › Ansys Products › Ansys AQWA: Long term responses from RAO › Reply To: Ansys AQWA: Long term responses from RAO

November 15, 2024 at 12:02 pm
S.S.S.ShankaVasuki
Subscriber

Hi,

I tried the solution you mentioned. But I dont see the previous comment for some reason. This is my .LIS file from the time domain analysis and I have used the following values in the equation

In the equation I have now used --> amplitude = sqrt(2 . S(wj) . del w) = 7.496E-03 ; aj = Phase column

I do get a better match i guess, but its not the same. I understand that there are some non-linearities that are included in the actual responses from the time domain analysis, however I also checked the wave frequency response as shown in the figure, the response from actual response and wave frequency response are the same.

So I am not sure why this equation is not giving the right results as shown in the figure below? Is there any other method to obtain long term responses? Please help me out with this