直升机旋翼气弹动力学优化策略(Ⅱ)——多目标优化解法研究  

The research on helicopter rotor aeroelastic dynamics multi-objective optimization solution

作　　者：王红州[1] 张兵[1] 王华毕[1] 李德宝[1] 

机构地区：[1]合肥工业大学机械与汽车工程学院,合肥230009

出　　处：《应用力学学报》2013年第2期217-222,303-304,共6页Chinese Journal of Applied Mechanics

基　　金：国家"十一;五"航空预研项目

摘　　要：在旋翼气弹动力学模型基础上进行了多目标优化问题的描述和分类,定义了多目标优化问题及其解,讨论了多目标优化问题的解法,提出了直升机旋翼气弹动力学多目标优化问题的解法。使用改进的遗传模拟退火算法、加权系数法、全局准则法相结合的混合式解法进行旋翼气弹动力学多目标优化问题的求解。算例结果表明:使用混合法的多目标优化解法设计变量变化平缓;同时设计目标函数的3次/转、4次/转、5次/转谐波振动载荷和桨叶总质量分别比初始设计减少13.4%、31.5%、20.9%和7.36%,优化效果明显。由本文的研究可知,在直升机旋翼气弹动力学多目标优化问题中,使用混合式多目标优化问题解法能使旋翼气弹动力学多目标优化收敛到Pareto最优解,同时可提高多目标优化问题解质量和结果的鲁棒性。Based upon the helicopter rotor aeroelastic dynamics,the problem of multi-objective optimization is described and classified in this paper.The multi-objective optimization problem and its solutions are defined.The solving methods are discussed.New solving method for multi-objective optimization problem of helicopter rotor dynamics is put forward.With the Hybrid method combining the improved genetic simulated annealing algorithm,the weighted coefficient method and the global standard method,the multi-objective problem is solved.It shows that design variables change flatly by using the Hybrid method of multi-objective optimization,the objective functions of 3 / rev,4 / rev,5 / rev harmonic vibration loads and the total mass of the blade,reduce to 13.4%,31.5%,20.9% and 7.36% than the initial design,respectively,the optimization effect is remarkable.It validates that multi-objective optimization problem solution for the helicopter rotor aeroelastic dynamics;the hybrid method can make the rotor aeroelastic dynamics multi-objective optimization convergence to the Pareto optimal solution.It enhances the quality and robustness of the multi-objective optimization problem solution.

关 键 词：直升机旋翼 旋翼气弹动力学 多目标优化 混合式方法 最优解 

分 类 号：V215.2[航空宇航科学与技术—航空宇航推进理论与工程]