Simulation Analysis of Non-Pneumatic Tire Wear Based on Temperature-Corrected Archard Model

Non-Pneumatic Tires (NPTs) have been recognized for their advantages, such as low rolling resistance, burst resistance, and lightweight design, which make them highly suitable for application in electric vehicles under complex conditions, including high-frequency starts and stops and high torque. However, the discontinuous spoke support structure has resulted in a significantly higher ground contact pressure distribution compared to traditional pneumatic tires, leading to more severe wear, especially in the contact area where complex stress concentrations have occurred. Currently, the wear behavior mechanisms of NPTs have not been fully clarified, and wear simulation methods that take temperature effects into account are lacking. In this study, a temperature-modified Archard wear equation was integrated into the UMESHMOTION subroutine to achieve real-time updates of the tire surface geometry and simulate the evolution of wear. The modeling approach was validated through experimental testing. The simulation results showed that as the load increased from 100 N to 700 N, the peak ground contact pressure significantly increased, and the contact area gradually expanded, resulting in a notable increase in wear. Additionally, as the slip ratio increased from 2% to 5%, the contact stress and wear area were significantly amplified, leading to an increase in surface roughness and evident local damage. Comparative results indicated that the slip ratio had a more significant impact on wear volume than the load. The study has been conducted from a physical mechanism perspective to verify the dominant role of the slip ratio in the short-term rolling distance of tires, providing a theoretical basis for the structural optimization and wear-resistant design of non-pneumatic tires under complex operating conditions.