摘要
平台的稳定是海上漂浮式风力机能够安全运行的最基础保障.通过建立基于驳船式平台的海上风力机整机模型,采用有限元方法,研究了漂浮式风力机驳船式平台在风、浪、流3种环境载荷联合作用下的时频域动态响应.通过漂浮式风力机驳船式平台在时域和频域内的变化幅度来分析平台的动态响应特性,得到了波浪力即F-K力和绕射力对平台六自由度运动的贡献以及各波浪力随频率的变化趋势.结果表明:平台幅值响应算子和平台所受波浪力均在低频波浪作用下出现较大响应;平台在纵荡、垂荡和纵摇方向的运动响应较之其他3个方向更加明显.
The stability of platform structure is the most basic guarantee for safety operation of offshore wind turbines.A whole machine model was built based on the ITI energy barge platform to research the time-domain dynamic response and frequency-domain performance under certain wind,wave and current conditions.Dynamic responses of the platform structure were analyzed under the time-varying conditions of structure amplitude and wave frequency.The contribution of F-K force and diffraction force to the structure with six degrees of freedom movement as well as the changing tendency of the wave force along with the change of frequency were analysed.The results show that the response amplitude operator （RAO）of platform and the wave force acting on platform are prone to get large under low frequency wave action.The structural responses in the heave,surge and pitch directions are obvious than those in the other three directions.
出处
《上海理工大学学报》
CAS
北大核心
2015年第5期425-432,共8页
Journal of University of Shanghai For Science and Technology
基金
国家自然科学基金资助项目(E51176129)
教育部高等学校博士学科点专项科研基金资助项目(20123120110008)
上海市教委科研创新重点项目(13ZZ120
13YZ066)
关键词
漂浮式风力机
驳船式平台
动态响应
floating wind turbine
barge platform
dynamic response
