Please use this identifier to cite or link to this item: https://doi.org/10.1115/OMAE2012-83124
Title: Novel hybrid system for reducing hydroelastic response of very large floating structures
Authors: Wang, C.M. 
Gao, R.P.
Koh, C.G. 
Kitipornchai, S.
Issue Date: 2012
Source: Wang, C.M.,Gao, R.P.,Koh, C.G.,Kitipornchai, S. (2012). Novel hybrid system for reducing hydroelastic response of very large floating structures. Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE 7 : 7-14. ScholarBank@NUS Repository. https://doi.org/10.1115/OMAE2012-83124
Abstract: This paper presents a novel hybrid system for reducing the hydroelastic response of pontoon-type, very large floating structure (VLFS) under wave action. The hybrid system comprises flexible connectors and "gill cells" which are compartments in VLFS with holes or slits at their bottom surfaces for allowing water to enter or leave freely. The gill cells are modeled by eliminating the buoyancy forces at their locations. In the hydroelastic analysis, the water is assumed to be an ideal fluid and its motion is irrotational so that a velocity potential exists. The VLFS is modeled as an isotropic plate according to the Mindlin plate theory. In order to decouple the fluid-structure interaction problem, the modal expansion method is adopted for the hydroelastic analysis which is carried out in the frequency domain. The boundary element method is used to solve the Laplace equation for the velocity potential, whereas the finite element method is employed for solving the equations of motion of the floating plate. It is found that by appropriately positioning the flexible line connector and a suitable distribution of gill cells in the VLFS, the hydroelastic response and stress resultants of the VLFS can be significantly reduced. Copyright © 2012 by ASME.
Source Title: Proceedings of the International Conference on Offshore Mechanics and Arctic Engineering - OMAE
URI: http://scholarbank.nus.edu.sg/handle/10635/75150
ISBN: 9780791844946
DOI: 10.1115/OMAE2012-83124
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