The invention discloses a spoke structure optimization method for improving the lateral rigidity of a honeycomb type non-pneumatic tire, relates to the technical field of wheel design, and solves the problem of control stability of the non-pneumatic tire in the driving process. According to the technical scheme, the method is characterized in that an NPT model is divided at equal intervals in the tire width direction to set different spoke structure thickness gradients, and multi-objective optimization design is carried out. The method aims to adjust the thickness of each segmented spoke structure of the NPT to maintain the original radial rigidity, and meanwhile, aims to reduce the lateral rigidity of the NPT to achieve collaborative optimization of the rigidity performance of the two. Sample points are generated by adopting Latin hypercube sampling, a radial basis function (RBF) proxy model is constructed, and a multi-objective optimization problem is solved by utilizing a non-dominated sorting genetic algorithm NSGA-II. The optimized NPT achieves better balance between lateral rigidity and radial rigidity, meanwhile achieves better performance in the aspects of light weight and maximum stress of spokes, and provides precious reference and reference for design of non-pneumatic tires.
本发明公开了一种改善蜂窝式非充气轮胎侧向刚度的轮辐结构优化方法,涉及车轮设计技术领域,解决了非充气轮胎在行驶过程中操控稳定性的问题。其技术方案的要点是通过在轮胎宽度方向上对NPT模型进行等间距分割以设置不同的轮辐结构厚度梯度,进行多目标优化设计。旨在调整NPT各分割轮辐结构的厚度保持原本径向刚度的同时,致力于降低NPT的侧向刚度,达成两者刚度性能的协同优化。采用拉丁超立方抽样生成样本点,并构建了径向基函数RBF代理模型,利用非支配排序遗传算法NSGA‑II对多目标优化问题进行求解。优化后的NPT在侧向刚度和径向刚度之间实现了更好的平衡,同时在轻量化和辐条最大应力方面也实现了更优性能,为非充气轮胎的设计提供了宝贵的参考和借鉴。
Spoke structure optimization method for improving lateral rigidity of honeycomb type non-pneumatic tire
一种改善蜂窝式非充气轮胎侧向刚度的轮辐结构优化方法
24.01.2025
Patent
Elektronische Ressource
Chinesisch
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