摘要
叶片是风力机的重要构件,对其合理设计十分重要。总结了叶片的设计流程,并选择合理的设计参数,设计出兆瓦级风力机的叶片;在三维绘图软件中建模;应用有限元法,选定叶片的材料参数,在有限元软件中对叶片进行模态分析,确定了叶片的各阶模态振型及各阶频率,并对比分析叶片各阶模态振型结果。结果表明,叶片的固有频率范围与外界的激励的频率范围不重合,因此避免了共振破坏的发生。
The blade is an important component of a wind turbine, and reasonable design of the blade is very important. In this paper, the process of blade design was summarized, and reasonable design parameters were selected to design Megawatt wind turbine blades. In addition, a three-dimensional modeling was carried out by a graphics software. The modal analysis of the wind turbine blade was made using selected blade material parameters by the finite element method. Each order modal shape and each order frequency of the blade were then determined, and Results for each order modal shape were compared. Results of the analysis showed that the inherent frequency is inconsistent with the range of frequency for incentive foundation, thus avoiding the occurrence of resonance.
出处
《能源研究与信息》
2012年第2期111-115,共5页
Energy Research and Information
基金
国家自然科学基金资助项目(E51176129)
上海市研究生创新基金项目(JWCXSL1021)
关键词
兆瓦级
风力机
模态分析
叶片设计
Megawatt
wind turbine
modal analysis
blade design