Please use this identifier to cite or link to this item:
https://doi.org/10.1016/j.ijnonlinmec.2004.02.013
Title: | Non-linear frequency-domain analysis of jack-up platforms |
Authors: | Zheng, X.Y. Liaw, C.Y. |
Keywords: | Correlation function Cumulant Cumulant spectrum FFT Non-Gaussian Power spectrum Price's theorem Spatial correlation |
Issue Date: | Nov-2004 |
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 |
URI: | http://scholarbank.nus.edu.sg/handle/10635/74263 |
ISSN: | 00207462 |
DOI: | 10.1016/j.ijnonlinmec.2004.02.013 |
Appears in Collections: | Staff Publications |
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