Effects of second-order wave force and focusing location on dynamic response of a tension leg platform under freak wave

被引：0
|
作者：
Chang S. [1 ]
Huang W. [1 ]
Wei D. [1 ,2 ]
Song H. [1 ]
机构：
[1] Engineering College, Ocean University of China, Qingdao
[2] Harbor Laboratory, Zhejiang Ocean University, Zhoushan
来源：
Huang, Weiping | 1600年 / Chinese Vibration Engineering Society卷 / 39期
关键词：
Focusing location; Freak wave; Second-order wave force; Tension leg platform (TLP);
D O I：
10.13465/j.cnki.jvs.2020.17.033
中图分类号：
学科分类号：
摘要：
Here, based on the wave focusing and wave time series superposition model, freak wave time series satisfying definition of freak wave were generated. Dynamic response of a tension leg platform (TLP) was solved under freak wave to analyze effects of second-order wave force and freak wave focusing location on the TLP's dynamic response. Results showed that freak wave can cause the TLP's large amplitude motions of surge, heave and pitch; second-order difference frequency wave force can cause large oscillations in surge direction; pitch motion is caused mainly by second-order sum frequency wave force's contribution; heave motion is composed of vertical high-frequency oscillation caused by second-order sum frequency wave force and large amplitude sinking movement caused by second-order surge difference frequency wave force; due to phase differences among wave forces with different frequencies, the TLP's extreme value responses of surge, heave, and pitch appear during freak wave acting on rear column and center of the TLP. © 2020, Editorial Office of Journal of Vibration and Shock. All right reserved.
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页码：254 / 260
页数：6
相关论文
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