ibt新思路（IBT new ideas）.docVIP

ibt新思路（IBT new ideas） Namely connection strength and connection efficiency With the development of science and technology, the requirement of material performance is more and more severe, and early to thermosetting or thermoplastic Plastic matrix composites are difficult to satisfy in terms of stiffness and temperature. People begin to use Gao Mo The high strength fiber is compounded with metal matrix or ceramic matrix in order to obtain composite with good heat resistance. As the new matrix is introduced, the reinforcing material also appears flakes and particles on the basis of the original single fiber reinforcement Granular and other new reinforcing materials The composite is flying The application of the main force parts of the aircraft will be fully developed, mainly focused on the wing of the aircraft in the future Fuselage. The main problem of mechanical joint of composite material is that the shear strength is low and transverse Low tensile strength and stress concentration due to hole making. In the structural design, the connection design is an important design content. Because the connection will increase the structure weight and Assembly work, the aircraft structure, according to statistics, the weight of its connection parts of the total weight of the structure of 5%--6%, The cost accounts for 3%. 5% of the cost of the whole machine. At the same time, the connection area is often the site of the damage in the structure, In particular, some important connecting joints, once damaged, may endanger the safety and reliability of the aircraft, therefore Attention must be paid to. In the structural design, the connection design is an important design content. Because the connection will increase the structure weight and Assembly work, the aircraft structure, according to statistics, the weight of its connection parts of the total weight of the structure of 5%--6%, The cost accounts for 3%. 5% of the cost of the whole machine. At the same time, the connection