摘要
利用有限元分析理论和MSC.Patran/Nastran软件对MW级风力发电机组的复合材料导流罩进行结构强度分析。通过分析壳单元特点,选择shell单元为导流罩的建模单元;对流线型导流罩的风载分布系数进行研究,根据第3类风区的特点和导流罩各部分的曲率半径划分区域并计算相关载荷;综合考虑风载、雪载、冰载等因素的影响,设计出相应的工况;对复合材料导流罩进行强度分析,得到最大应力和变形。计算结果表明:复合材料导流罩不会发生分层破坏。
The structure strength for composite hub-cover of a mega-watt wind turbine is analyzed based on the FEA （finite element analysis） theory using MSC. Patran/Nastran software. Shell element is chosen to build up the FEA model of hub-cover by the analysis of various 2D elements. The wind-load distribution coefficients are studied for the streamlined shape of hub-cover, and each load is calculated according to the property of the third wind region as well as different curvature radius of the hub-cover. Wind-load, snow-load and ice-load are all concerned to design the corresponding load-case. To get the maximum stress and displacement, static strength of the composite hub-cov- er is analyzed and the result shows that the hub-cover won＇t be destroyed under the ultimate load.
出处
《机械科学与技术》
CSCD
北大核心
2013年第4期528-532,共5页
Mechanical Science and Technology for Aerospace Engineering
关键词
导流罩
复合材料
工况设计
有限元分析
hub-cover
composite materials
load-case design
finite element analysis
