Abstract：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.
常爽1，黄维平1，魏东泽1,2，宋虹1. 二阶波浪力和聚焦位置对畸形波作用下张力腿平台动力响应的影响研究[J]. 振动与冲击, 2020, 39(17): 254-260.
CHANG Shuang1, HUANG Weiping1, WEI Dongze1,2, SONG Hong1. Effects of second-order wave force and focusing location on dynamic response of a tension leg platform under freak wave. JOURNAL OF VIBRATION AND SHOCK, 2020, 39(17): 254-260.
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