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Title: Hydroelastic Analysis of Pontoon-Type Circular VLFS
Authors: Watanabe, E.
Utsunomiya, T.
Wang, C.M. 
Xiang, Y.
Keywords: Eigenfunction expansion matching method
Galerkin's method
Hydroelastic analysis
Mindlin circular plate
Modal expansion method
Issue Date: 2003
Source: Watanabe, E.,Utsunomiya, T.,Wang, C.M.,Xiang, Y. (2003). Hydroelastic Analysis of Pontoon-Type Circular VLFS. Proceedings of the International Offshore and Polar Engineering Conference : 93-99. ScholarBank@NUS Repository.
Abstract: This paper is concerned with the hydroelastic analysis of a pontoon-type circular very large floating structure (VLFS). For more accurate evaluation of the stress-resultants, the more refined Mindlin plate theory has been adopted to model the circular plate, instead of the commonly used classical thin plate theory. The analysis of VLFS is carried out in the frequency domain using the modal expansion method. The deflection of a circular Mindlin plate with free edges is firstly decomposed into vibration modes which can be obtained in an exact manner. Then the hydrodynamic diffraction and radiation forces are evaluated by using eigenfunction expansion matching method that is also in an exact manner. The Galerkin's method is used to calculate the modal amplitudes. The method and numerical examples presented herein can serve as accurate benchmark solutions for numerical methods such as BEM for analyzing pontoon-type VLFSs.
Source Title: Proceedings of the International Offshore and Polar Engineering Conference
Appears in Collections:Staff Publications

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