Benchmark hydroelastic responses of a circular VLFS under wave action

Watanabe, E., Utsunomiya, T., Wang, C. M. and Hang, L. T. T. (2006) Benchmark hydroelastic responses of a circular VLFS under wave action. Engineering Structures, 28 3: 423-430. doi:10.1016/j.engstruct.2005.08.014

Author Watanabe, E.
Utsunomiya, T.
Wang, C. M.
Hang, L. T. T.
Title Benchmark hydroelastic responses of a circular VLFS under wave action
Journal name Engineering Structures   Check publisher's open access policy
ISSN 0141-0296
Publication date 2006-02-01
Year available 2005
Sub-type Article (original research)
DOI 10.1016/j.engstruct.2005.08.014
Open Access Status Not yet assessed
Volume 28
Issue 3
Start page 423
End page 430
Total pages 8
Place of publication Kidlington, Oxford, United Kingdom
Publisher Pergamon Press
Language eng
Abstract This paper is concerned with the hydroelastic analysis of a pontoon-type circular very large floating structure (VLFS). The coupled fluid-structure interaction problem may be solved by using the modal expansion method in the frequency domain. It involves, firstly, the decomposition of the deflection of a circular Mindlin plate with free edges 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 done in an exact manner. The hydroelastic equation of motion is solved by the Rayleigh-Ritz method for the modal amplitudes, and then the modal responses are summed up to obtain the total response. The very accurate deflections and stress-resultants of uniform circular VLFSs presented herein are valuable as they serve as benchmark solutions to check the numerical methods for hydroelastic analysis of VLFSs.
Keyword Circular plate
Free vibration
Hydroelastic analysis
Mindlin plate theory
Modal expansion method
Very large floating structures
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Civil Engineering Publications
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