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|Title:||Non-linear frequency-domain analysis of jack-up platforms|
|Authors:||Zheng, X.Y. |
|Source:||Zheng, X.Y., Liaw, C.Y. (2004-11). Non-linear frequency-domain analysis of jack-up platforms. International Journal of Non-Linear Mechanics 39 (9) : 1519-1534. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijnonlinmec.2004.02.013|
|Abstract:||The autocorrelation function and higher-order cumulants of the non-Gaussian wave modal force, with a cubic approximation of the Morison drag force and a quartic approximation of the inundation force, are presented. The method utilized is based on Price's theorem for evaluating the associated joint moments of the non-linear wave forces. One- and multi-dimensional fast Fourier transform techniques are employed to obtain the power and higher-order spectra of the wave modal force and structural response. The non-linear frequency-domain analyses of two typical jack-up platforms are carried out using the correlation function based approach, which is numerically much more efficient than either the method based on Volterra-series or time-domain simulation. © 2004 Elsevier Ltd. All rights reserved.|
|Source Title:||International Journal of Non-Linear Mechanics|
|Appears in Collections:||Staff Publications|
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