Reliability Analysis of Wing Fuselage Docking Structure

摘要

During the long term of flight task, to the structure of wing fuselage, the aircraft will cause multi-site damage due to fatigue load and other factors, which will reduce the residual strength of the structure rapidly and result in serious flight accidents. It is very important to do research on the reliability of multi-site damage. on the basis of single crack, the interaction between multi-site cracks is introduced, and the theory of single crack is extended to the propagation of multi-site cracks, calculating the stress intensity factors and interaction factors in various modes of multiple cracks.[1],[2]