关键词: 航空轮胎, 着陆冲击动力学, 安全分析, 有限元模型

Abstract: This article established a finite element model of aircraft single-wheel main landing gear for the landing impact dynamic and conducted landing impact dynamic simulation and safety analysis. Firstly, by simplifying the fuselage, landing gear, tire, and pavement structure, a three-dimensional model of the aircraft single-wheel main landing gear was constructed, and Hypermesh was used to complete the mesh division of the model. Secondly, the Ogden model was used to describe the stress-strain relationship of tire rubber, and a finite element model of the tire was established to verify that the simulation results of tire deformation were basically consistent with the results calculated by empirical formulae. Finally, the implicit dynamic algorithm was used to study the load-bearing capacity and deformation of the tire under different landing speeds, and the safety of tire landing impact was analyzed in combination with airworthiness standards. The safety threshold of aircraft landing speed was obtained, providing a new research method for safety assessment of aircraft tire landing.

Key words: aircraft tire, landing impact dynamic, safety analysis, finite element model