考虑连续性和对称性约束的复合材料风力机叶片纤维铺角优化  

Ply angle optimization of wind turbine blade considering continuity and symmetry constraints

作　　者：李天泽 李宏宇 孙鹏文[1] 王子瑞 LI Tianze;LI Hongyu;SUN Pengwen;WANG Zirui(School of Mechanical Engineering,Inner Mongolia University of Technology,Hohhot 010051,China)

机构地区：[1]内蒙古工业大学机械工程学院,呼和浩特010051

出　　处：《复合材料科学与工程》2024年第2期75-80,共6页Composites Science and Engineering

基　　金：内蒙古自治区直属高校基本科研业务费项目(JY20220080,JY20220373)。

摘　　要：在复合材料结构的设计过程中,应考虑为满足结构性能和生产工艺要求所必需的制造性约束,使之贴合工程实际。论文基于复合材料层合板理论和离散材料优化方法,将铺层参数优化转换为离散多相材料的纤维铺角分布优化问题,构建了以结构柔顺度最小为目标函数,备选材料人工密度为设计变量,连续性约束和设计变量和等于1为约束函数的复合材料层合板分区细观纤维铺角优化数学模型。以考虑连续性与对称性约束的层合板和某风力机叶片进行应用,结果表明,考虑连续性和对称性约束的优化铺层方案可提高结构的性能,有效避免结构的翘曲变形,减小基体开裂的概率,更符合生产制造要求。In the design process of composite structure,necessary manufacturing constraints that satisfies the requirements of structure performance and production process shall be considered to make it conform to the engineer-ing practice.Based on the theory of composite laminates and the discrete material optimization method,the optimiza-tion problem of ply parameters of composite laminates is transformed into the optimization of fiber angle distribution of discrete multiphase materials.The patch optimization mathematical model of micro fiber ply angle for composite laminates is established in this paper,which takes the element ply angle as design variable,the minimum compli-ance as the objective function,the continuity and sum of design variables as the constraint.The optimization results of composite laminate with continuity constraints and a wind turbine blade with continuity and symmetry constraints indicated that the optimized ply scheme considering continuity and symmetry constraints can effectively improve the structure performance,avoid warping deformation,reduce the probability of matrix cracking,which is more suitable for manufacturing requirement.

关 键 词：铺角优化 连续性约束 对称性约束 复合材料 风力机叶片 

分 类 号：TB332[一般工业技术—材料科学与工程]