摘要
基于FAST开源软件和Wolf土-构耦合(SSI)模型建立了风力机地震工况动力学仿真模型,并计算了5种不同平均风速的气动载荷与101种不同强度的地震载荷联合作用下风力机的动力学响应.结果表明:在额定风速下,气动载荷与地震载荷之间为非线性耦合,评估风力机地震动力学响应时,必须充分考虑风-震耦合效应;风速相同时,塔基最大弯矩先保持不变,再以线性增长的趋势变化;在低强度地震时,塔架不同高度处的最大弯矩与塔架高度之间为线性关系;随着地震强度的逐渐增大,塔架最大弯矩与塔架高度之间的关系逐渐变为非线性,且额定风速下塔架最大弯矩最大.
A dynamic simulation model was established for wind turbine on the basis of FAST open source software and Wolf soil-structure interaction（SSI）model under seismic conditions,with which the structural dynamic response of wind turbine was calculated under the combined action of aerodynamic loads at 5 mean wind speeds and seismic loads of 101 intensities.Results show that the aerodynamic load is nonlinearly coupled with seismic load at rated wind speed,and their coupling effect should be adequately considered during the assessment of seismic response.At a constant wind speed,the maximum bending moment of tower base remains unchanged at first,and increases linearly then.In the case of low-intensity earthquakes,the maximum bending moment at different elevations is linearly related to the height of tower;with the rise of seismic intensity,the relationship between bending moment and tower height turns to be nonlinear,and the tower top moment reaches the maximum at rated wind speed.
作者
杨阳
李春
袁全勇
YANG gang LI Chun YUAN Quanyong(School of Energy and Power Engineering, University of Shanghai for Science and Technology, Shanghai 200093, China Shanghai Key Laboratory of Multiphase Flow and Heat Transfer in Power Engineering, Shanghai 200093, China)
出处
《动力工程学报》
CAS
CSCD
北大核心
2017年第11期938-944,共7页
Journal of Chinese Society of Power Engineering
基金
国家自然科学基金资助项目(51176129
51676131)
上海市科委资助项目(13DZ2260900)
关键词
风力机
地震载荷
动力学响应
架结构强度
wind turbine
seismic load
dynamic response
structural strength of tower
作者简介
杨阳（1992-），男，江西宜春人，博士研究生，主要从事风力机复杂工况气动弹性响应方面的研究．
李春（通信作者），男，教授，博士，电话（Tel-）：13301777337；E-mail：lichunusst@163．com．
