风力机桨叶的三维建模与动力学特性有限元计算.pdf

文档介绍：可再生能源
第 28 卷第 3 期
年月
2010 6 Renewable Energy Resources Jun. 2010
风力机桨叶的三维建模与动力学特性
有限元计算
陈顺章, 李录平, 晋风华, 卢绪祥, 朱益军, 谭海辉
长沙理工大学能源动力工程学院湖南长沙
( , 410076)
以结构动力学基本方程为理论基础将桨叶看成是根部完全固定的悬臂结构建立了桨叶运动的物理
摘要: , ,
模型和数学模型以风力机桨叶为例在软件中建立风力机桨叶实体模型并应用国际通用的
。 15 kW , AutoCAD ,
大型有限元分析软件对桨叶在零转速下的振动模态和不同转速下的振动模态进行了计算与分析分
ALGOR ,
别算出其前阶的固有频率和振型对风力机桨叶的频率谱响应进行了分析得到了激振力作用下叶片的振动
5 。,
位移与应力分布
。
风力机桨叶三维建模动力学特性有限元计算
关键词: ; ; ;
中图分类号: TK83 文献标志码: A 文章编号: 1671-5292(2010)03-0029-06
3D modeling and finite element analysis on dynamic character-
istics of wind turbine blade
CHEN Shun-zhang, LI Lu-ping, JIN Feng-hua, LU Xu-xiang, ZHU Yi-jun, TAN Hai-hui
(College of Power and Energy Engineering, Changsha University of Science & Technology,Changsha 410076,China)
Abstract: According to the theoretical basis based on the fundamental equation of structural dy-
namics, a wind turbine blade was treated as a free suspended beam which was entirely fixed on the
root. Then the physical and mathematic model of wind turbine blades were built. Blades were Mod-
eled in the AutoCAD, the blades of the practical 15 kW wind turbine were used as example. With
the aid of FEA software ALGOR, the model of blades were analyzed on the vibration modes which
were under irrotating and different rotational speeds. Natural frequencies and mode shapes were
calculated. A