Estimation of heave and pitch natural frequencies: AnSyS Aqwa?

03 March 2017 1 3K Report

Hi everyone,

I have been analyzing the responses of a freely floating body in AnSys Aqwa. I already got the Response Amplitude Operators (RAO) from it.

I am aware that the natural frequencies of vessel motions (heave, pitch and roll) can be estimated using AnSyS Aqwa using free decay tests.

Even though RAO plots provide peaks at respective natural frequencies, I would like to calculate them separately by means of free decay tests in Aqwa.

Does anyone in the group know how to solve this issue?

Thanks in advance.

Hariharan Kallath

Hi Xavier,

Thank you very much for the answer. Sure, I will try to work it out.

Sorry for my late response.

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