UM
Nonlinear random vibrations of moored floating structures under seismic and sea wave excitations
Wang K.; Er G.-K.; Iu V.P.
2019-05-01
Source PublicationMarine Structures
ISSN09518339
Volume65Pages:75-93
AbstractA numerical model is formulated for the nonlinear random vibrations of the offshore floating structures moored by cables under seismic and sea wave excitations. The upper end of each mooring cable is connected to the floating structure and the other end of each cable is fixed to the seabed. Nonlinear equations of motions of the mooring cables are formulated by using the nonlinear cable elements that are formulated based on the extended Hamilton principle. The floating platform is modeled as a rigid body with three degrees of freedom. The connection conditions which represent the relationships between the displacements of the floating platform and cables are given to derive the equations of motions of the whole system. The effects of nonlinear hydrodynamic drag forces and added-mass on both the floating platform and cables are taken into consideration. The random vibrations of the moored floating structure under both horizontal seismic ground motion and sea wave excitation are analyzed by using the Monte Carlo simulation method. The probability density functions of the displacements of the moored floating structure and the maximum tensile force in the cables are analyzed. The influences of different sag-to-span ratios, inclination angles and diameters of the mooring cables on the mean value and standard deviation of the displacements of the floating structure and the maximum tensile force in the cables are studied.
KeywordCable element Connection conditions Random vibration Sea wave excitation Seismic ground motion
DOI10.1016/j.marstruc.2018.12.006
URLView the original
Language英語
Fulltext Access
Citation statistics
Cited Times [WOS]:0   [WOS Record]     [Related Records in WOS]
Document TypeJournal article
CollectionUniversity of Macau
AffiliationUniversidade de Macau
Recommended Citation
GB/T 7714
Wang K.,Er G.-K.,Iu V.P.. Nonlinear random vibrations of moored floating structures under seismic and sea wave excitations[J]. Marine Structures,2019,65:75-93.
APA Wang K.,Er G.-K.,&Iu V.P..(2019).Nonlinear random vibrations of moored floating structures under seismic and sea wave excitations.Marine Structures,65,75-93.
MLA Wang K.,et al."Nonlinear random vibrations of moored floating structures under seismic and sea wave excitations".Marine Structures 65(2019):75-93.
Files in This Item:
There are no files associated with this item.
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Wang K.]'s Articles
[Er G.-K.]'s Articles
[Iu V.P.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Wang K.]'s Articles
[Er G.-K.]'s Articles
[Iu V.P.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Wang K.]'s Articles
[Er G.-K.]'s Articles
[Iu V.P.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.