Structures And Structures Analysis Of A Certain UAV

More and more academic institutions have the plan to develop an Unmanned Aerial Vehicle (UAV) in recent years. And composite materials have been used to make a UAV more and more. The accidence analysis of the certain UAVs structures strength has been done in this paper, which was based on the goal in the whole and the strength and stiffness criterion of UAV as well as other criterions.Since some structures have been designed based on initial concept design of the goal in the whole, its component structures was described in the paper. And referring to characteristic of a UAV, the aviation load was given by using the strength and stiffness criterion of UAV. Then the load would be used to do FEM analysis of the structures of the UAV.The analysis of three structures of wing-box including sandwich structure of GFRP and foam, laminate of GFRP and aluminum alloy structure are compared by equal quality and equal strength under two major load cases.According as the criterion of modeling structures, the FEM model of the wing, fuselage and its whole body are founded. By using the FEM software ABAQUS, the stress and strain of wing under different load cases is calculated. And stability analysis of wing-box and whole body as is done, too. The analysis of free model and stress and strain of the whole body are obtained in the end. Then the analysis result is gived.However, the work done in this paper is just initial job about the structures strength of the UAV. More and advanced work such as its strength when the UAV is doing roll-maneuver should be going on.