摘要
针对风力机叶片内部的结构形式,采用薄壁结构力学多闭式理论,对某种风力机叶片结构进行简化和分析,建立几何模型,利用MATLAB进行编程计算,得到叶片断面的弯扭特性参数.分析结果表明,风力机叶片断面的扇性静矩分布并不均匀,在叶片断面头部的值较小,尾部的值较大,容易造成叶片后缘失稳.在风力机叶片结构设计时,要提高叶片后缘部分的设计参数,以满足叶片的结构强度、刚度及稳定性要求.
Aimed at the inner configuration or wind turbine blades, a wind turbine blade was analyzed and simplified with the thin-walled beam theory to establish its geometric model for structural analysis. The torsion and bending characteristic parameters were obtained by using the software MATLAB. It was shown by the analysis of result obtained investigation that the distribution of torsion and bending characteristic parameters was non-uniform. Their values at blade leading edge were smaller and they were bigger at trailing edge instead, which makes the blade trailing edge unstable. Therefore, the design parameters at blade trailing edge should be enlarged for blade construction design to meet the requirements of its strength, stiffness, and stability.
出处
《兰州理工大学学报》
CAS
北大核心
2008年第4期46-49,共4页
Journal of Lanzhou University of Technology
基金
国家重点基础研究发展计划(2007CB714600)
关键词
风力机叶片
薄壁多闭室断面
弯扭特性参数
wind turbine blades
thin-walled beam with multi-cell section
torsion and bending characteristic parameters
