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ポンツーン型浮体の波浪中弾性応答解析への Hamilton-Dirichlet 原理の適用(第2報 : 任意平面形状浮体への適用)

発表形態:
原著論文
主要業績:
単著・共著:
発表年月:
2010年06月
DOI:
会議属性:
査読:
リンク情報:

日本語フィールド

著者:
新里 英幸;永田 修一;豊田 和隆;島崎 克教
題名:
ポンツーン型浮体の波浪中弾性応答解析への Hamilton-Dirichlet 原理の適用(第2報 : 任意平面形状浮体への適用)
発表情報:
日本船舶海洋工学会論文集 = Journal of the Japan Society of Naval Architects and Ocean Engineers 号: 11 ページ: 4150
キーワード:
概要:
Many analytical methods have been proposed to calculate hydroelastic responses of a very large pontoon type structure in waves.In relation to the elastic response of such pontoon type structure in waves, Isshiki and Nagata proposed the "Modified Hamilton-Dirichlet's Principle 2", which is expressed only using the velocity potential. It is the variational principles related to motions of the elastic floating plate on a water surface.In this study, in order to calculate the wave-induced responses of an elastic floating plate in waves, a new method was proposed which uses the "Modified Hamilton-Dirichlet's Principle 2"and the eigenfunction expansion method for fluid motion. The velocity potentials in fluid regions with and without the plate are expanded by eigenfunctions in vertical mode which satisfy the governing equations and free-surface conditions, taking into account the presence of the plate in the same manner as Kim and Ertekin. In this method, "Modified Hamilton-Dirichlet's Principle 2" is finally reduced to a variational equation which corresponds to boundary conditions on the plate's edge. The formulation of proposed method is applicable for the floating plate of arbitrary plan geometry.Calculated results of two kinds of rectangular and L-shaped floating plate in an open sea are compared with experimental results.Good agreement is found between computed and experimental results.
抄録:

英語フィールド

Author:
NIIZATO Hideyuki;NAGATA Shuichi;TOYOTA Kazutaka;SHIMAZAKI Katsunori
Title:
Application of Hamilton-Dirichlet's Principle to Analysis of Wave-induced Responses of an Elastic Floating Plate (2nd Report)
Announcement information:
Journal of the Society of Naval Architects of Japan Issue: 11 Page: 4150
An abstract:
Many analytical methods have been proposed to calculate hydroelastic responses of a very large pontoon type structure in waves.In relation to the elastic response of such pontoon type structure in waves, Isshiki and Nagata proposed the "Modified Hamilton-Dirichlet's Principle 2", which is expressed only using the velocity potential. It is the variational principles related to motions of the elastic floating plate on a water surface.In this study, in order to calculate the wave-induced responses of an elastic floating plate in waves, a new method was proposed which uses the "Modified Hamilton-Dirichlet's Principle 2"and the eigenfunction expansion method for fluid motion. The velocity potentials in fluid regions with and without the plate are expanded by eigenfunctions in vertical mode which satisfy the governing equations and free-surface conditions, taking into account the presence of the plate in the same manner as Kim and Ertekin. In this method, "Modified Hamilton-Dirichlet's Principle 2" is finally reduced to a variational equation which corresponds to boundary conditions on the plate's edge. The formulation of proposed method is applicable for the floating plate of arbitrary plan geometry.Calculated results of two kinds of rectangular and L-shaped floating plate in an open sea are compared with experimental results.Good agreement is found between computed and experimental results.


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