Non-Linear Response of Ocean Structure in Wind and Waves

海洋结构在风浪中的非线性响应

• 批准号: 01550352
• 负责人: INOUE Y.
• 金额: $ 1.15万
• 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 (C)
• 财政年份: 1990
• 资助国家: 日本
• 起止时间: 1990 至 1991
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-01550352/
• 关键词: Mooring System; Mooring Force; Non-Linear Response; 多方向不規則波; 長周期運動; 非線形流体力; 運動応答解析

In this study, numerical calculation program for non-linear responses of moored floating body in wind and waves been developed. This program is based on the 3 dimensional source technique to calculate diffraction and radiation forces acted on the body, random non-linear wave drift and wind forced, non-linear restoring forces by mooring system.To confirm the validation of this program, several comparative studies were carried out.The dynamic analysis of tensions of mooring line was also investigated by using the lumped mass method.So-called the dynamic analyses for moored floating structures are never the same method in detail. Therefore the dynamic analyses may not always give more reliable results than quasi-static analyses.Accordingly, dynamic simulations of moored structures in wind and waves are conducted in various conditions of sea states, mooring lines, and vessels. The numerical results are shown in figures as the charts for the sake of determining the ratios of slowly varying oscillations due to second order forces to high frequency motions due to first order wave excitations and others.

本文开发了系泊浮体在风浪作用下非线性响应的数值计算程序。该程序是基于三维源技术计算作用在船体上的衍射和辐射力，随机非线性波浪漂移和风强迫，系泊系统的非线性恢复力。为了证实该方案的有效性，进行了几项比较研究。采用集中质量法对锚泊索的张力进行了动力学分析。所谓的系泊浮式结构的动力分析从来都不是一种详细的方法。因此，动态分析并不总是比准静态分析给出更可靠的结果。据此，在各种海况、系泊线和船舶条件下，对系泊结构进行风浪作用下的动力学仿真。为了确定由二阶力引起的慢变振荡与由一阶波激励和其他激励引起的高频运动的比率，数值结果以图表形式显示。

项目成果

Yoshiyuki Inoue他: "Comparative Study on the Quasiーstatic Analyses and Dynamic Simulations for Estimating the Maximum Tensions of Mooring Lines" 1991 International Offshore and Polar Engineering Conference (ISOPEー91). 236-242 (1991)

Yoshiyuki Inoue 等人：“用于估计系泊线最大张力的准静态分析和动态模拟的比较研究”1991 年国际近海和极地工程会议 (ISOPE-91) (1991)。

Y. NOUE et al.: "Comparative Study on the Quasi-static Analyses and Dynamic Simulations for Estimating the Maximum Tensions of Mooring Lines" International offshore and Polan Eng. Conf.236-242 (1991)

Y. NOUE 等人：“用于估计系泊线最大张力的准静态分析和动态模拟的比较研究”国际海上和 Polan Eng。

井上義行,杉山祐樹: "任意反射率岸壁付近に係留された浮体の運動と係留力の3次元解析" 海岸工学論文集. 36. 739-743 (1989)

Yoshiyuki Inoue、Yuki Sugiyama：“停泊在任意反射码头附近的浮体的运动和系泊力的三维分析”海岸工程杂志 36. 739-743 (1989)。

Yoshiyuki Inoue 他: "Comparative Study on the Quasiーstatic Analyses and Dynamic Simulations for Estimating the Maximum Tensions of Mooring Lines" 1991 International Offshore and Polar Engineering Conference (ISOPEー91). 236-242 (1991)

Yoshiyuki Inoue 等人：“用于估计系泊线最大张力的准静态分析和动态模拟的比较研究”1991 年国际近海和极地工程会议 (ISOPE-91) (1991)。

Yoshiyuki Inoue他: "Comparative study on the Quasiーstatic Analyses and Dynamic Simulation for Estimating the Maximum Tensions of Mooring Lines" 1991 International Offshore and Polar Engineering Conference (ISOPEー91). (1991)

Yoshiyuki Inoue 等人：“用于估计系泊线最大张力的准静态分析和动态模拟的比较研究”1991 年国际近海和极地工程会议 (ISOPE-91) (1991)。