海上风车塔架随机载荷作用下非线性动力可靠性分析研究
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摘要
本文依据哈密顿原理建立了具有非线性弹性基础的海上风车塔架结构时域分析方程,采用完全离散法将振动方程离散化,运用线性滤波法的自回归技术模拟脉动风速时程,分析了空间与时间步长以及载荷频率对数值计算稳定性的影响.并对一海上风车进行了塔架结构的动力响应时程计算和基于一次超越的塔架结构动力可靠性计算,为海上风车结构塔架可靠性分析设计提供借鉴和参考.
According to Hamilton's principle,time-domain analysis equations were represented for the structure of offshore wind turbine which has a nonlinear elastic foundation.The equations were discreted based on fully discrete method.Wind velocity time history was numerically simulated by using auto-regressive technique of linear filtering method.It was emphasized on the influence which time step,space step and load frequency have on the stability of numerical calculation.Results are presented for the dynamic response time history and the first crossing reliability for offshore wind structure,which will provide a guide for the reliability analysis of offshore wind turbine.
According to Hamilton's principle,time-domain analysis equations were represented for the structure of offshore wind turbine which has a nonlinear elastic foundation.The equations were discreted based on fully discrete method.Wind velocity time history was numerically simulated by using auto-regressive technique of linear filtering method.It was emphasized on the influence which time step,space step and load frequency have on the stability of numerical calculation.Results are presented for the dynamic response time history and the first crossing reliability for offshore wind structure,which will provide a guide for the reliability analysis of offshore wind turbine.
引文
[1]鲁晓兵,郑哲敏,张金来.海洋平台吸力式基础的研究与进展[J].力学进展,2003,33(1):27-40.
[2]李桂青,曹宏,李秋胜.结构动力可靠性理论及其应用[M].北京:地震出版社,1993.
[3]Wang D,Wang H,Shi Y,et al.Wind turbine simulation of offshore environmental conditions[C]//Intelligent Information Technology Application Research Association.2010 Second International Conference on Future Computer and Communication.Wuhan:IEEE,2010.
[4]Agarwal P,Manuel L.Simulation of offshore wind turbine response for long-term extreme load prediction[J].Engineering Structures,2009,31(10):2236-46.
[5]丁阳,郭天焓.大跨度空间网格结构风荷载数值模拟方法[J].天津大学学报,2007,40(7):766-770.
[6]陈小波,陈健云,李静.海上风力发电塔脉动风速时程数值模拟[J].中国电机工程学报,2008,28(32):111-116.
[7]袁波,应惠清,徐佳炜.基于线性滤波法的脉动风速模拟及其MATLAB程序的实现[J].结构工程师,2007,23(4):55-61.
[8]杨俊.MW级吸力筒式海上风车结构设计研究[D].天津:天津大学,2009.
[9]中国船级社.风力发电机组规范[S].北京:北京交通出版社,2008.
[10]欧进萍,肖仪清,段忠东,等.基于风浪联合概率模型的海洋平台结构系统可靠度分析[J].海洋工程,2003,21(4):1-7.
[11]Jonkman J M.Dynamics modeling and loads analysis of an offshore floating wind turbine[R].Colorado:National Renewable Energy Laboratory,2007.
[12]夏禾,陈英俊.风和列车荷载同时作用下车桥系统的动力可靠性[J].土木工程学报,1994,27(2):14-21.
[13]王长清,祝西里.电磁场计算中的时域有限差分法[M].北京:北京大学出版社,1994.
[2]李桂青,曹宏,李秋胜.结构动力可靠性理论及其应用[M].北京:地震出版社,1993.
[3]Wang D,Wang H,Shi Y,et al.Wind turbine simulation of offshore environmental conditions[C]//Intelligent Information Technology Application Research Association.2010 Second International Conference on Future Computer and Communication.Wuhan:IEEE,2010.
[4]Agarwal P,Manuel L.Simulation of offshore wind turbine response for long-term extreme load prediction[J].Engineering Structures,2009,31(10):2236-46.
[5]丁阳,郭天焓.大跨度空间网格结构风荷载数值模拟方法[J].天津大学学报,2007,40(7):766-770.
[6]陈小波,陈健云,李静.海上风力发电塔脉动风速时程数值模拟[J].中国电机工程学报,2008,28(32):111-116.
[7]袁波,应惠清,徐佳炜.基于线性滤波法的脉动风速模拟及其MATLAB程序的实现[J].结构工程师,2007,23(4):55-61.
[8]杨俊.MW级吸力筒式海上风车结构设计研究[D].天津:天津大学,2009.
[9]中国船级社.风力发电机组规范[S].北京:北京交通出版社,2008.
[10]欧进萍,肖仪清,段忠东,等.基于风浪联合概率模型的海洋平台结构系统可靠度分析[J].海洋工程,2003,21(4):1-7.
[11]Jonkman J M.Dynamics modeling and loads analysis of an offshore floating wind turbine[R].Colorado:National Renewable Energy Laboratory,2007.
[12]夏禾,陈英俊.风和列车荷载同时作用下车桥系统的动力可靠性[J].土木工程学报,1994,27(2):14-21.
[13]王长清,祝西里.电磁场计算中的时域有限差分法[M].北京:北京大学出版社,1994.
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