采用风力机叶片梁帽的厚度和宽度为优化设计变量,在保证气动外形不变,质量不增加的情况下,以获得最大截面挥舞刚度为设计目标,使用改进粒子群算法对叶片截面进行优化设计,建立了一种风力机叶片的截面刚度优化设计模型。算例结果表明:合理的设计梁帽的厚度和宽度能得到更好的截面挥舞刚度,验证了模型的有效性。优化结果对结构设计具有一定的参考价值。 Adopting the thickness and width of wind turbine blade spar cap as the optimal design variable, under the condition that the aerodynamic shape is unchanged and the mass is not increased, the maximum cross-section waving stiffness is taken as the design goal, and the improved particle swarm algorithm is used to optimize the blade cross section , A model of optimal design of section stiffness of wind turbine blade was established. The results of numerical examples show that the thickness and width of a properly designed spar cap can obtain a better cross-sectional waving stiffness, which verifies the validity of the model. The result of optimization has certain reference value to the structural design.