侧倾工况下子午线轮胎接地区域非对称特性影响因素研究

Study on factors affecting asymmetric characteristics of radial tire ground contact zone under roll condition

车辆侧倾时轮胎接地特性呈现的非对称性对车辆燃油经济性、轮胎磨损以及轮胎动力学特性都有重要影响。考虑到接地特性高度依赖轮胎接地时印迹的形状和印迹上压力的准确分布,而目前计算轮胎侧倾时接地印迹上压力值的计算模型尚欠精确,以205/55 R16型半钢子午线轮胎为研究对象建立三维有限元模型,对影响准确获取轮胎接地非对称特性即压力分布的因素进行研究,构建侧倾工况下轮胎的二维接地压力模型,对压力分布影响因素及影响规律进行研究,为准确获取侧倾工况下轮胎路面间峰值附着系数的轮胎智能化研究提供参考。

Due to the asymmetry of tire ground contact characteristics during vehicle roll,it has an important impact on vehicle fuel economy,tire wear,and tire dynamics.Moreover,the ground contact characteristics are very dependent on the shape of the tire contact mark and the accurate distribution of pressure on the mark,while the current calculation model for calculating the pressure value on the ground contact mark when the tire is tilted is not accurate.In response to this issue,this paper establishes a three-dimensional finite element model for 205/55 R16 semi steel radial tire as the research object,studies the factors that affect the accurate acquisition of tire ground contact asymmetry,i.e.,pressure distribution,and builds a two-dimensional ground contact pressure model for the tire under roll conditions.By investigating the influencing factors and laws of pressure distribution under roll conditions,this paper provides a foundation for the intelligent research of tires to accurately obtain the peak adhesion coefficient between tires and pavement under roll conditions.