Structural Strength Analysis for Composite Hub Cover of Wind Turbine
-
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。Abstract: 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 FEAmodel of hub-cover by the analysis of various 2D elements.The wind-load distribution coefficients are studied forthe streamlined shape of hub-cover, and each load is calculated according to the property of the third wind region aswell as different curvature radius of the hub-cover.Wind-load, snow-load and ice-load are all concerned to designthe corresponding load-case.To get the maximum stress and displacement, static strength of the composite hub-cover is analyzed and the result shows that the hub-cover won't be destroyed under the ultimate load.
-
Key words:
- hub-cover /
- composite materials /
- load-case design /
- finite element analysis
-
[1] 李俊峰, 施鹏飞, 高虎. 2010 中国风电发展报告[M]. 海口: 海南出版社, 2010 [2] Global Wind Energy Council (GWEC) &Greenpeace. Global Wind Energy Outlook 2010. http: //www. gwec. net [3] 姚兴佳, 王士荣, 董丽萍. 风力发电技术的发展与现状[J].可再生能源, 2006, 125(1): 86~88 [4] 韩二锋, 余国城. 大型风力发电机组机舱罩和导流罩的设计与生产[J]. 电气制造, 2010,(3): 63~65 [5] 陈建桥. 复合材料力学概论[M]. 北京: 科学出版社, 2008 [6] 左惟炜, 肖来元, 廖道训. Tsai2Wu 准则用于三维编织复合材料矩形梁强度计算[J]. 华中科技大学学报, 2006, 34: 74~76 [7] 杨剑, 张璞, 陈火红. 新编 MD Nastran 有限元实例教程[M].北京: 机械工业出版社, 2008 [8] Guideline for the Certification of Wind Turbines[S]. Germany,2010 [9] 德国风荷载规范中文版[S]. DIN-1055-4-2 [10] 张相庭. 结构风工程[M]. 北京: 中国建筑工业出版社, 2006
点击查看大图
计量
- 文章访问数: 192
- HTML全文浏览量: 19
- PDF下载量: 3
- 被引次数: 0