带束层膨胀对轮胎接地印痕的影响研究

研究带束层膨胀对轮胎接地印痕的影响。对比多种普通带束层膨胀的钢丝帘线角度变化法则,分析普通带束层膨胀对轮胎接地印痕仿真准确性的影响;探讨0°带束层钢丝帘线的特性,提出考虑0°带束层预应变的轮胎性能仿真方法,并分析0°带束层预应变对轮胎接地印痕的影响。本研究结果可为轮胎的结构设计、工艺设计和仿真分析方面提供指导。     

描述轮胎接地印痕的新方程

New equations are proposed to describe the shapes and sizes of the contact areas between tire and ground（the contact areas） under the conditions of static load，slip，camber，and rolling.The equations are super ellipse and trigonometric function with four parameters.Results indicate that the contact areas under the conditions of static load，slip，camber can be well described by super ellipse，in the most complicated case，fourteen parameters are used.The rolling contact area can be reconstructed by the trigonometric function completely.Symmetrical and asymmetrical shapes can both be described perfectly.The suggested curves will make calculate sizes of the areas easily.The described shapes and sizes are in good agreement with the measured，the maximum deviation is only 2.88%.This work will provide an instrument for understanding the contact area and be helpful for analyzing tire and road.