Mechanical Properties of Non-pneumatic Tires Composed of Linked Zig-zag Cores

In this study, we investigated the impact of varying spoke geometries and the number of layers on tire stiffness and stress concentration in NPTs utilizing a linked zig-zag core structure. Through finite element analysis, our numerical simulations revealed that reducing the number of layers in the zig-zag structure leads to a decrease in the maximum von Mises stress. Additionally, the stress concentrations can be minimized by increasing the angle between the beams and the vertical axis. The proposed NPT model demonstrated a reduction in maximum von Mises stress and strain energy by approximately 51.8% and 26.7%, respectively, compared to previously proposed NPT designs.