摘要
叶片性能直接关系到风电机组的服役寿命,铺层参数是决定叶片性能的关键因素之一。结构的刚度可由应变能的大小来反映,论文推导了复合材料壳体结构的应变能表达式。从工程角度出发,以某1.5 MW叶片为对象,采用分级优化策略,考虑叶片强度和质量特性,以结构应变能最小为目标函数,建立了叶片铺层参数的优化数学模型,通过求解得到了优化的铺层角度、整体铺层厚度分布和铺层顺序。结果表明:优化后叶片的质量降低,静态刚强度提高,验证了方法的有效性。
The blade performance is directly related to the service life of wind turbine,and the ply parameters are one of the key factors to determine the blade performance.The stiffness of the structure can be reflected by the magnitude of strain energy.The expression of strain energy of composite shell structure is deduced in this paper.From the view of engineering point,taking a 1.5 MW blade as the object and the minimum structural strain energy as the objective function,adopting the hierarchical optimization strategy,considering the strength and quality characteristics of the blade,the optimization mathematical model of ply parameters is established.The optimized ply angle,ply thickness distribution and ply stacking sequence are obtained by solving.The results show that the quality of the optimized blade is reduced,while the static stiffness and strength are improved.The effectiveness of the method is verified.
作者
赵雄翔
孙鹏文
李建东
ZHAO Xiong-xiang;SUN Peng-wen;LI Jian-dong(Energy Technology Center of Inner Mongolia,Hohhot 010010,China;School of Mechanical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China;The Fourth Branch,Inner Mongolia First Machinery Group Co.,Ltd.,Baotou 014030,China)
出处
《复合材料科学与工程》
CAS
北大核心
2022年第7期20-24,共5页
Composites Science and Engineering
基金
内蒙古自然科学基金(2020MS05022)。
关键词
铺层参数
应变能
优化设计
数学模型
风力机叶片
复合材料
ply parameters
strain energy
optimization design
mathematical models
wind turbine blade
composites
