Anghelache Gabriel, Moisescu Raluca
Automotive Engineering Department, National University of Science and Technology POLITEHNICA Bucharest, 060042 București, Romania.
Sensors (Basel). 2025 Jul 5;25(13):4193. doi: 10.3390/s25134193.
The paper presents results of experimental research on tyre-road contact stress distributions, measured indoors for a motorsport slick tyre. The triaxial contact stress distributions have been measured using the complex transducer containing a transversal array of 30 sensing pins covering the entire contact patch width. Wheel displacement in the longitudinal direction was measured using a rotary encoder. The parameters allocated for the experimental programme have included different values of tyre inflation pressure, vertical load, camber angle and toe angle. All measurements were performed at low longitudinal speed in free-rolling conditions. The influence of tyre functional parameters on the contact patch shape and size has been discussed. The stress distributions on each orthogonal direction are presented in multiple formats, such as 2D graphs in which the curves show the stresses measured by each sensing element versus contact length; surfaces with stress values plotted as vertical coordinates versus contact patch length and width; and colour maps for stress distributions and orientations of shear stress vectors. The effects of different parameter types and values on stress distributions have been emphasised and analysed. Furthermore, the magnitude and position of local extreme values for each stress distribution have been investigated with respect to the above-mentioned tyre functional parameters.
本文介绍了对赛车光头胎室内测量的轮胎-路面接触应力分布的实验研究结果。使用包含30个传感销横向阵列的复杂传感器测量了三轴接触应力分布，该阵列覆盖了整个接触斑宽度。使用旋转编码器测量车轮在纵向方向上的位移。实验方案分配的参数包括不同的轮胎充气压力、垂直载荷、外倾角和前束角值。所有测量均在自由滚动条件下以低纵向速度进行。讨论了轮胎功能参数对接触斑形状和尺寸的影响。每个正交方向上的应力分布以多种形式呈现，例如二维图，其中曲线显示每个传感元件测量的应力与接触长度的关系；应力值作为纵坐标与接触斑长度和宽度绘制的曲面；以及应力分布和剪应力矢量方向的彩色图。强调并分析了不同参数类型和值对应力分布的影响。此外，针对上述轮胎功能参数，研究了每个应力分布的局部极值的大小和位置。
