54results about How to "Large deformation range" patented technology

The invention belongs to the technical field of aircraft manufacturing and computer image processing, and relates to an achieving method for a morphing aircraft wing frame based on a folded paper structure. According to the achieving method, the three-dimensional coordinate system of the wing is determined, and the shapes of the upper surface curve and the lower surface curve of the wing are characterized by adopting the cross section curve equation; m coordinate points having the equal height are defined in the x-z plane, and the cross section curve equation performs the z-direction translation, such that the shapes of the upper surface curve and the lower surface curve of the wing and the coordinate points having the equal height are positioned in the same x-z plane; and a subsection approximation method is adopted to obtain 2N fitting coordinate points, the m*N top points of the wing frame based on the folded paper structure are obtained with the m coordinate points having the equal height and the 2N fitting coordinate points, the top points and all the adjacent points are connected through straight sections to form the folding pattern of the three-dimensional folded paper corresponding to the wing frame based on the folded paper structure, and the computer-assisted manufacture of the wing frame is further performed. According to the present invention, the good specific strength and the good energy absorption characteristic of the folded paper are utilized to design the wing frame suitable for the morphing aircraft, and the good application prospects are provided.