Finite Element Analysis of Non-pneumatic Wheel with Chiral Honeycomb Spokes
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摘要: 非气胎车轮相较于充气式车轮, 具有安全性高, 无需充气, 低维护成本, 滚动阻力低等优点, 因此在特殊场景具有广阔前景。本文研究非气胎车轮, 使用蜂窝结构作为辐板以代替充气轮胎。设计了手性蜂窝结构作为非气胎车轮的辐板, 同时对手性蜂窝的各参数对性能的影响做了分析。基于六韧带手性蜂窝、四韧带手性蜂窝和四韧带反手性蜂窝结构, 设计了3种辐板结构。使用有限元软件ANSYS计算得到了非气胎车轮的承载力和最大Mises应力。在相同的垂直位移载荷条件下, 针对手性蜂窝的节圆半径及其壁厚参数做了有限元分析, 得出了支反力以及最大Mises应力关于这两个参数影响的曲线。研究结果可以为手性蜂窝作为辐板的非充气车轮的优化设计做参考。Abstract: Comparing with inflatable wheels, non-pneumatic wheels have the advantages of high safety, free inflation, low maintenance cost and low rolling resistance, and they have broad prospects in special scenarios. The non-pneumatic tire is studied, and honeycomb structure is used as a spoke instead of air. A non-pneumatic tire is designed based on chiral honeycomb, and then the influence of the parameters of the chiral honeycomb on the performance is analyzed. Based on the six ligament chiral honeycomb, the four ligament chiral honeycomb and the four ligament backhand honeycomb structures, three type spoke structures were designed. The finite element software ANSYS was used to calculate the bearing capacity and local stress of non-pneumatic tires. Under the same vertical load condition, a finite element analysis was used to examine the influence of the radius of the pitch circle and the wall thickness of the chiral honeycomb on the wheels. The curves of load capacity and maximum Mises stress versus these two parameters were obtained. The present results can be used as a reference for optimizing the non-pneumatic tires with chiral honeycomb spokes.
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Key words:
- non-pneumatic tire (NPT) /
- chiral honeycomb /
- finite element method /
- pitch radius /
- wall thickness
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表 1 非充气轮胎材料部分力学性能
材料 密度ρ/(kg·m-3) 弹性模量E/MPa 泊松比ν 铝合金 2 800 7.2×10E4 0.33 高强度钢 7 800 2.1×10E5 0.29 聚氨酯 1 200 32 0.49 橡胶 1 043 11.9 0.49 
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