
6.12. A designer of an offshore drilling platform utilizes the Pierson-Moskowitz ocean wave height spectra
in the preliminary design of the structure using a linear single degree-of-freedom model. The input force
due to the waves is Gaussian. Provide a mostly verbal description of that process with few equations.
Solution: Given that we idealize the structure with a linear SDOF system, we can use the fact that for
such a system with Gaussian input, the response is also Gaussian. The spectral densi ...