Hydroelastic Analysis of Pontoon-Type Circular VLFS

Eiichi Watanabe, Tomoaki Utsunomiya, Chien Ming Wang, Yang Xiang

Research output: Contribution to conferencePaperpeer-review

14 Citations (Scopus)


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.

Original languageEnglish
Number of pages7
Publication statusPublished - 2003
Externally publishedYes
EventProceedings of the Thirteenth (2003) International Offshore and Polar Engineering Conference - Honolulu, HI, United States
Duration: May 25 2002May 30 2003


OtherProceedings of the Thirteenth (2003) International Offshore and Polar Engineering Conference
Country/TerritoryUnited States
CityHonolulu, HI

All Science Journal Classification (ASJC) codes

  • Energy Engineering and Power Technology
  • Ocean Engineering
  • Mechanical Engineering


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