哈尔滨工业大学工学硕士学位论文 Abstract Dragonfly is one of the most ancient lives on the earth,through billions years of evolution,it has excellent flight ability that other lives can't compare with.Along with biomimetic technical development in recent years,people have already started to investigate the micro-aircraft which imitates dragonfly.We need to carry out research on the principle of dragonfly flight before making this kind of aircraft. In this thesis,liquid field of forewing flapping is analyzed by using FLUENT software,and the lift force is calculated,then,based on the real structure of the forewing and hindwing of dragonfly,the plane geometric model of biomimetic wings is created using some CAD software.The three-dimensional finite element models of biomimetic wings are built by choosing suitable element types and characteristic parameters.FEA software ANSYS is used to conduct calculation of the wings'deflection under static force,which use the lift force computed before as load,take the deviation of forewing which made by lift force to liquid field of forewing flapping analysis,and manual iterative liquid-solid coupling compute.The relationships among the dragonfly flapping frequency, flapping form and lift force are discussed. Second,base on the research on dragonfly flapping fly theory,a set of experimental apparatus is designed and manufactured which is used to simulate dragonfly flapping.The flapping resource of the apparatus is PZT,and control system is programming by LabVIEW,capacitance micrometer and acceleration sensor are used to test the actual working status of the experimental apparatus. The result of test shows that the apparatus not only can realize simulate single dragonfly wing flapping,but also realize double wings flapping at same time. Keywords Liquid field analysis,bionic,dragonfly,flapping frequency, experimental apparatus --哈尔滨工业大学工学硕士学位论文 - II - Abstract Dragonfly is one of the most ancient lives on the earth, through billions years of evolution, it has excellent flight ability that other lives can't compare with. Along with biomimetic technical development in recent years, people have already started to investigate the micro-aircraft which imitates dragonfly. We need to carry out research on the principle of dragonfly flight before making this kind of aircraft. In this thesis, liquid field of forewing flapping is analyzed by using FLUENT software, and the lift force is calculated, then, based on the real structure of the forewing and hindwing of dragonfly, the plane geometric model of biomimetic wings is created using some CAD software. The three-dimensional finite element models of biomimetic wings are built by choosing suitable element types and characteristic parameters. FEA software ANSYS is used to conduct calculation of the wings’ deflection under static force, which use the lift force computed before as load, take the deviation of forewing which made by lift force to liquid field of forewing flapping analysis, and manual iterative liquid-solid coupling compute. The relationships among the dragonfly flapping frequency, flapping form and lift force are discussed. Second, base on the research on dragonfly flapping fly theory, a set of experimental apparatus is designed and manufactured which is used to simulate dragonfly flapping. The flapping resource of the apparatus is PZT, and control system is programming by LabVIEW, capacitance micrometer and acceleration sensor are used to test the actual working status of the experimental apparatus. The result of test shows that the apparatus not only can realize simulate single dragonfly wing flapping, but also realize double wings flapping at same time. Keywords Liquid field analysis, bionic, dragonfly, flapping frequency, experimental apparatus