摘要
采用时域耦合法对某传统式张力腿平台进行非线性动力响应研究,重点讨论不同随机波有义波高、谱峰周期和入射波方向对张力腿平台各自由度运动响应和顶端张力的影响。结果显示,本文各工况各自由度最大位移均满足设计要求。纵荡、垂荡和首摇运动幅值对有义波高较为敏感;平面内运动对谱峰周期较敏感,而谱峰周期对平面外运动影响不大;平面内运动对入射波角度较敏感。纵荡和首摇为低频运动,垂荡和纵摇为高频运动,其中垂荡与纵荡相耦合;由于高频载荷引起平台升沉、横摇和纵摇运动,而这3种运动又作用于张力腿轴向振荡,从而使得张力腿顶端张力表现为高频响应。
The time-domain coupling method is applied in this paper to study on nonlinear response of classical tension leg platform. Different irregular significant wave heights, spectral pe dynamic riods and incoming directions have influence on different degrees of freedom and top tension of tether, which is mainly discussed in this paper. The results demonstrate that the maximum displacements of all cases satisfy the requirements of rules. The amplitudes of surge, heave and yaw are sensitive to Motion in-plane is sensitive to spectral periods which have little influence on motion plane is also sensitive to incoming directions. Surge and are high-frequency motions. Heave and surge have coupl yaw ing sign out are low-frequency motions motion each other. Due to ificant wave height of plane. Motion in- heave and yaw heave, roll and pitch caused by high-frequency load which lead to vibration with high-frequency response of top tension in axis direction of tendon
出处
《舰船科学技术》
北大核心
2014年第7期58-63,75,共7页
Ship Science and Technology
基金
国家自然科学基金资助项目(51309123)
江苏省高校自然科学研究资助项目(13KJB570002)
江苏省船舶先进设计制造技术重点实验室开放研究基金资助项目(CJ1203)
关键词
时域耦合
高频
低频
非线性
运动响应
time-domain coupling
high-frequency
low-frequency
nonlinear
motion response
