Static and dynamic mechanical characteristics of honeycomb non-pneumatic tire under structural damage condition

Non-pneumatic tires overcome the hidden dangers of puncturing, deflating and bursting of conventional pneumatic tires, and improve the driving safety and mobility of vehicles. However, due to stress concentration, variable load and impact, the critical components of non-pneumatic tires may still fail. In this paper, the influence of local damage on the static and dynamic characteristics of the honeycomb non-pneumatic tire was studied by using the finite element method. Firstly, according to the working principle and structural characteristics of the honeycomb tire, the finite element model of the tire was established, and its static characteristics in good condition state were analyzed. Then, the failure mode and danger area of the honeycomb tire were discussed, and the vulnerable parts of the honeycomb tire were determined. Finally, the static and dynamic characteristics of the honeycomb non-pneumatic tire in local damage conditions were simulated. The tire stiffness, grounding pressure, and vibration characteristics with different damage degrees were analyzed qualitatively. The results show that the spoke damage has different effects on the static and dynamic characteristics of non-pneumatic tires, including vertical stiffness, ground pressure and natural frequency. The research results provide a basis for structural design and optimization, health monitoring, and fault diagnosis of the non-pneumatic tire.