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为解决大展弦比机翼气动和结构学科的耦合分析及优化耗时问题,采用高精度计算流体力学(CFD)与计算结构动力学(CSD)模型耦合分析的方法,得到耦合分析后最终真实变形情况下的应力状态和气动力性能,指出大展弦比机翼气动结构耦合分析的必要性.对自适应响应面法进行改进,提出一种基于模糊聚类自适应径向基的全局优化策略,研究了该策略的全局寻优能力和优化效率.运用该优化策略对考虑气动结构耦合分析的大展弦比机翼结构进行多学科设计优化研究.研究结果表明该气动结构耦合分析方法可行有效,并且该优化策略提高了优化效率.
In order to solve the problem of coupling analysis and time-consuming optimization of aerodynamic and structural wings with large aspect ratio wings, a coupled analysis method of high-precision CFD and CSD was used to obtain the final real coupling analysis The stress state and the aerodynamic performance under deformation, and points out the necessity of the coupling analysis of aerodynamic structure with large aspect ratio wing. The adaptive response surface method is improved and a global optimization strategy based on fuzzy clustering adaptive radial basis , The global optimization ability and the optimization efficiency of this strategy are studied.The multi-disciplinary design optimization of the large aspect ratio wing structure considering the aerodynamic structural coupling analysis is carried out by using this optimization strategy.The results show that the aerodynamic structural coupling analysis method is feasible and effective , And the optimization strategy improves the optimization efficiency.