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OA

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.