In order to clarify the contradictory mechanism between tire rolling resistance and grip performance, ten (10) 205/55 R16 radial tires with different tread patterns were selected as the research objects. Using VIC-3D non-contact strain measurement system, the pattern deformation in the contact area under vertical load was tested and the relevant deformation parameters of the contact area were extracted. Correlation analysis was used to establish the relationship between the identified deformation parameters and tire performance indicators. Then the contradiction mechanism between tire rolling resistance and grip performance was identified. The mechanism is such that, in order to improve the grip performance of the tire, it is necessary to reduce the transverse tensile strain of the tread in the contact area and increase the longitudinal tensile strain of the tread, but with the increase of the longitudinal tensile strain, the rolling resistance of the tire will also increase, which leads to the contradiction between tire rolling resistance and grip performance. In order to better understand and solve this contradiction, a finite element model of 205/55R16 tire with complex pattern was established. The influence of the number and width of transverse grooves in outer shoulder area on tire rolling resistance and grip performance was analyzed by numerical simulation, where it was identified that, the longitudinal tensile deformation of the tread is the main cause of contradiction between the two performances. An optimized design of concave transverse groove with narrow groove in the middle and wide groove at both ends was proposed in the outer shoulder area to resolve the contradiction. Compared with the original scheme, the rolling resistance of the optimized scheme was reduced by 2.112 N, and the grip force saw an increase of 10.196 N, and thus delivering a cooperative improvement of tire rolling resistance and grip performance.

为了阐明轮胎滚动阻力与抓地性能之间的矛盾机理，选择十（10）个具有不同胎面花纹的205/55 R16子午线轮胎作为研究对象。使用VIC-3D非接触应变测量系统，测试了垂直载荷作用下接触区域的图案变形，并提取了接触区域的相关变形参数。相关分析用于建立识别的变形参数和轮胎性能指标之间的关系。然后确定了轮胎滚动阻力与抓地性能之间的矛盾机理。该机制是为了改善轮胎的抓地性能，必须减小胎面在接触区域中的横向拉伸应变并增加胎面的纵向拉伸应变，但是随着纵向拉伸应变的增加，轮胎的滚动阻力也将增加，这导致轮胎的滚动阻力增大。轮胎滚动阻力与抓地性能之间存在矛盾。为了更好地理解和解决这一矛盾，建立了具有复杂花纹的205 / 55R16轮胎的有限元模型。通过数值模拟分析了胎肩外侧横向沟槽的数量和宽度对轮胎滚动阻力和抓地性能的影响，发现胎面的纵向拉伸变形是两种性能之间矛盾的主要原因。 。为解决这一矛盾，提出了一种优化的设计，即在外侧肩部区域中部为窄槽，两端为宽槽的横向凹槽的优化设计。与原始方案相比，优化方案的滚动阻力降低了2.112 N，抓地力增加了10.196 N，从而共同改善了轮胎的滚动阻力和抓地性能。