Multi-Objective Optimization of the Geometry of a Non-Pneumatic Tire for Three-Dimensional Stiffness Adaptation

Non-pneumatic tires (NPTs) have been widely used for their advantages of no run-flat, need air maintenance, and unique stiffness characteristics. This study focuses on the design a spoke Fibonacci spiral non-pneumatic tire (FS-NPT) based its properties three-dimensional stiffness. Finite element (FE) models, parametric studies, designs experiments (DOEs), sensitivity analyses are conducted to effect considering three variables: (a) thickness spokes, (b) radius first spoke, (c) width spokes FS-NPT. The results show that variation in all parameters had considerable lateral from DOE create response surface model (RSM) multi-objective function (minimal SSD) constraint weight analytical RSM functions optimized minimizing SSD subjected given constraint. indicate variables significant vertical potential longitudinal NPT. Hence, FS-NPT has certain independent design. work demonstrates tires, especially FS-NPTs, decoupling. guides industrial production flexible-spoke bionic NPTs by providing very simple structure. optimization FS-NPTs large range. different targets can be achieved adjusting combinations variables, mass does not increase significantly.