鱼形仿生柔性翼结构设计及优化

以锦鲤为生物原型，开展了鱼形仿生柔性翼结构设计及优化研究。通过循环水池实验，表征出锦鲤游动姿态；基于折纸结构，建立鱼形仿生柔性翼结构模型，研究其驱动载荷和振动幅值的特性。设计正交试验，分析鱼形仿生柔性翼结构设计的主要几何参数对其性能的影响规律，并通过周期性运动对其性能进一步分析。结果表明：结构外板厚度、结构内板厚度和隔板角度对驱动载荷和振动幅值的影响依次增大。仿生柔性翼外/内板厚度、隔板角度依次为0.7mm/0.3mm、75°，其摆动姿态和实际锦鲤摆动姿态的最大偏差是8.13%。且该结构的极限屈服幅度远大于试验的最大屈服幅度，回弹性能好。

Structural design and optimization of fish like bionic flexible wing

Taking Koi as the biological prototype, the structural design and optimization of fish like bionic flexible wing were carried out. The swimming posture of Koi was characterized by circulating pool experiment; Based on origami structure, the structure model of fish like bionic flexible wing is established, and the characteristics of driving load and vibration amplitude are studied. The orthogonal experiment is designed to analyze the influence of the main geometric parameters on the performance of the fish like bionic flexible wing, and the performance is further analyzed through periodic motion. The results show that the influences of the thickness of the outer plate, the thickness of the inner plate and the angle of the diaphragm on the driving load and vibration amplitude increase in turn. The thickness of bionic flexible wing outer / inner plate and baffle angle are 0.7mm/0.3mm and 75°. The maximum deviation between the swing posture and the actual swing posture of koi is 8.13%. And the ultimate yield range of the structure is far greater than the maximum yield range of the test, and the springback performance is good.