Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1719863 | Applied Ocean Research | 2016 | 14 Pages |
Abstract
Identification of transfer functions from surge motion response of a semisubmersible platform from model test data is presented in this paper. The identification is carried out by estimating the time-varying model coefficients of a time-varying NARX (TVNARX) model. The coefficients are estimated using proposed method, named artificial bee colony-based Kalman smoother (ABC-KS). System input-output data for identification process are wave height and surge motion from a scaled 1:100 model of a prototype semisubmersible. The applicability of proposed method is assessed numerically and experimentally under unidirectional long-crested random waves. The results show that the linear and quadratic frequency response functions as well as the wave and low frequency responses of a semisubmersible platform can be well identified either in time or frequency domains. The evolution of the nonlinear wave-structure interactions also can be revealed with respect to measured time duration.
Related Topics
Physical Sciences and Engineering
Engineering
Ocean Engineering
Authors
Edwar Yazid, Mohd. Shahir Liew, Setyamartana Parman, Velluruzhatil John Kurian,