| 基于侧向变刚度的轮胎多边形磨损机理分析 |
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| 引用本文： | 李勇,左曙光.基于侧向变刚度的轮胎多边形磨损机理分析[J].农业机械学报,2010,41(8). |
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| 作者姓名： | 李勇 左曙光 |
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| 作者单位： | 同济大学汽车学院; |
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| 基金项目： | 国家自然科学基金资助项目 |
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| 摘 要： | 考虑轮胎接地摩擦的非线性特性,建立了基于侧向变刚度的轮胎多边形磨损模型,并对系统的稳定性进行了分析,指出轮胎的自激振动是一种由系统Hopf分岔引起的稳定周期振动现象,通过数值仿真得到了引起胎面自激振动的车速和车轮前束角范围.结果表明:轮胎多边形磨损为一种典型的非线性自激振动现象,其发生与胎面的侧向振动有关,磨损边数近似等于胎面的侧向振动频率与车轮转动频率之比.所建模型能够很好地解释轮胎多边形磨损的形成机理.
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| 关 键 词： | 车辆 轮胎 多边形磨损 变刚度 机理 |
Mechanism of Polygonal Wear of Tire Based on Variable Stiffness of Lateral |
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| Li Yong,Zuo Shuguang.Mechanism of Polygonal Wear of Tire Based on Variable Stiffness of Lateral[J].Transactions of the Chinese Society of Agricultural Machinery,2010,41(8). |
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| Authors: | Li Yong Zuo Shuguang |
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| Institution: | Li Yong Zuo Shuguang (School of Automotive Studies,Tongji University,Shanghai 201804,China) |
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| Abstract: | Considering the nonlinear characteristic of tire's grounding friction,a polygonal wear model of tire was established based on variable stiffness of lateral. Then the stability of system was analyzed,and the self-excited vibration of tire was proved to be a kind of stable periodic vibration caused by Hopf bifurcation of system. Finally,the ranges of speed and toe-in angle which could motivate self-excited vibration were given through numerical simulation. The results showed that the polygonal wear was a typi... |
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| Keywords: | Vehicle Tire Polygonal wear Variable stiffness Mechanism |
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