Non-linear Response Analyzes of Moored Floating Bodies in Multi-directional Composite lrregular Forces

多向复合不规则力作用下系泊浮体的非线性响应分析

• 批准号: 04452217
• 负责人: INOUE Yoshiyuki
• 金额: $ 3.14万
• 依托单位: YOKOHAMA NATIONAL UNIVERSITY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (B)
• 财政年份: 1992
• 资助国家: 日本
• 起止时间: 1992 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-04452217/
• 关键词: FLOATING STRUCTURE; MOORING SYSTEM; NON-LINEAR RESPONSES; MULTI-DIRECTIONAL IRREGULAR WAVE; COMPOSITE EXTERNAL FORCE; 係留浮体; 係留設計法; 非線形外力

In this study, non-linear responses of moored floating bodies in multi-directional ocean current, fluctuated wind and irregular waves has been investigated. The importance of the effects of the low frequency wave forces in mooring system has been recognized. It is shown that the low frequency horizontal motions of a large amplitude in moored vessels are excited by slowly varying non-linear forces. Now there are many papers concerning with numerical calculation and experimental results of wave drift forces. Unfortunately, these papers mainly focused on long crested waves. For more realistic seas-including wind and ocean current-there are very few results. In order to predict low frequency motions of the moored vessel in realistically seas, it is necessary to investigate the various environmental forces in the seas. To perform the study, following subjects are researched.(1) Numerical studies for non-linear hydrodynamics(2) Dynamic behaviors of mooring lines(3) Non-linear responses of moored floating bodies(4) Control of position keeping system of marine structures(5) Application to the design of mooring system

本研究探讨系泊浮体在多向海流、脉动风及不规则波浪作用下之非线性响应。低频波浪力在系泊系统中的重要性已被人们所认识。结果表明，系泊船舶的大振幅低频水平运动是由缓变的非线性力激发的。目前已有许多关于波浪漂移力的数值计算和实验结果的研究。不幸的是，这些论文主要集中在长峰波。对于更真实的海洋，包括风和洋流，结果很少。为了预报系泊船舶在实际海洋中的低频运动，需要研究海洋中的各种环境力。为了进行研究，研究了以下主题。(1)非线性流体动力学的数值研究（2）系泊缆的动力学行为（3）系泊浮体的非线性响应（4）海洋结构物位置保持系统的控制（5）系泊系统设计中的应用

项目成果

Y. Inoue & S. Surendran: "Dynamic Tension Analysis of Surface Towing System" 日本造船学会論文集. 175. 241-250 (1994)

Y. Inoue & S. Surendran：“水面拖曳系统的动态张力分析”日本造船学会论文集 175. 241-250 (1994)

Y.Inoue,Jian Du: "An Application of Fuzzy Contorol Theory in Dynamic Positioning System" 日本造船学会論文集. 174. 389-396 (1993)

Y. Inoue，Jian Du：“模糊控制理论在动态定位系统中的应用”日本造船学会学报 174. 389-396 (1993)

井上 義行、薛 為一: "方向スペクトル波中の変動標流力と長周期運動に関する数値シミュレーション" 日本造船学会論文集. 172. 27-34 (1992)

Yoshiyuki Inoue、Tameichi Suse：“方向谱波中脉动标记力和长周期运动的数值模拟”日本造船学会汇刊 172. 27-34 (1992)。

M.Arai,L.Y.Cheng & Y.Inoue: "A Computing Method for the Analysis of Water Impact of Arbitrary Shaped Bodies" 日本造船学会論文集. 176. 233-240 (1994)

M.Arai、L.Y.Cheng 和 Y.Inoue：“任意形状物体水影响分析的计算方法”，日本造船学会会刊 176. 233-240 (1994)。

Y.Inoue & S.Surendran: "Dynamics of the Interraction of Mooring Line with the Sea Bed," The 4th International Offshore and Polar Engineering Conference,. 2. 317-328 (1994)

井上勇