摘要
以750kW风力发电机叶片为研究对象，结合新疆达坂城1971～2000年基本气候情况，叶片材料分别为碳纤维增强复合材料和玻璃纤维增强复合材料，采用UG建模，导入ANSYS Workbench中对叶片进行热应力分析、瞬态热分析及疲劳分析。结果表明：在热载荷的作用下，叶片均发生轴向变形，且碳纤维叶片较玻璃纤维的变形程度小；同时，低温环境对叶片性能影响较大，相对年平均温度时，在极端最低温度作用下，碳纤维叶片最大等效应力增加了213％，叶片产生疲劳、发生低温脆断的可能性增大。
The research object was 750 kW wind turbine blade, according to the Xinjiang Dabancheng wind farm weather conditions from 1971 to 2000. The materials of blade were Carbon Fiber Reinforced Plastics （CFRP） and Glass Fiber Reinforced Plastic （FRP）. Imported UG Modeling to ANSYS Workbench, and achieved the thermal stress analysis, transient thermal analysis and fatigue analysis. The results showed that blade not only occurs axial deformation under the thermal load, but also the degree of deformation of CFRP is smaller than FRP. Meanwhile, low-temperature environment affects the properties of blade seriously. Contrasting extreme minimum temperatures with annual average temperature, the maximum yon stresses of CFRP blade increase 213%. The blade occurs fatigue and the possibility of low temperature brittle fracture increases. Therefore, temperature change affects the properties of blade. In the future, except considering the properties of material, the temperature will be the necessary consideration factor during the research and choose of blade material.
出处
《太阳能学报》
EI
CAS
CSCD
北大核心
2014年第9期1730-1734,共5页
Acta Energiae Solaris Sinica
基金
新疆科技重点专项(201130110)
