Abstract
Transient dynamics of non-pneumatic tires are particularly critical for evaluating their performance in medium-speed vehicles. To study transient dynamic characteristics of the non-pneumatic tire with honeycomb spokes, a finite element (FE) model was initially established using the ABAQUS software. The validity of the FE model was demonstrated through comparing predicted and measured results. Transient simulations were subsequently performed to investigate the effects of obstacle size, rolling speed, and normal load on longitudinal and vertical dynamic responses of the tire in both time and frequency domains, apart from its local deformation characteristics. The results showed significant growth in peak longitudinal and vertical forces with an increase in obstacle radius and normal load. The resonance frequencies in axle forces, however, were slightly affected by these parameters. Besides, the speed revealed notable effects on both time and frequency domain response characteristics, particularly the variation in resonance frequencies of the longitudinal forces when the velocity was increased from 20 to 50 km/h. In addition, the honeycomb tire exhibited qualitatively inferior enveloping performance than its pneumatic counterpart. These results could help deepen the understanding of the transient dynamic behavior of honeycomb tires under real-world driving conditions and offer essential guidance for optimizing tire designs for practical applications.
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