In view of the complexity of tire structure and working conditions, tire models are often based on complete and accurate test data. In combined with the theory of tire dynamics, the empirical and semi-empirical tire models are built. In order to accurately measure the tire mechanical properties, it is necessary to strictly control the wear state of the tire tread during the tire test. But there is still a certain amount of wear, which does not guarantee the consistency of the data. In order to study the influence of wear on the mechanical properties of the tire, based on the tire footprint pressure distribution model and brush model theory, combined with the brush model theory and the rubber block shear stiffness deformation theory, the tire cornering stiffness model under different wear conditions is established. The footprint pressure distribution model is built based on the results of footprint test under different wear conditions. And combined the test result with different tread wear conditions and the theory of brush model, the tire brush model considering tread wear conditions is built. Based on the above theoretical model, the UniTire tire cornering slip model considering the tread wear state is established. To verify the accuracy of the model, the UniTire cornering slip model is obtained by using the cornering slip data in three tread wear states, and the tire mechanical properties of the other tread wear conditions are predicted. The error between the simulation results of the model and the experimental results is small, which effectively prove the predictive ability of UniTire cornering slip model considering tread wear. This study will help to improve the UniTire tire model and provide theoretical and technical support for the UniTire indoor and outdoor expansion applications.

鉴于轮胎结构和工况的复杂性，轮胎模型往往基于完整准确的测试数据。结合轮胎动力学理论，建立经验和半经验轮胎模型。为了准确测量轮胎的机械性能，在轮胎试验过程中必须严格控制轮胎胎面的磨损状态。但是还是有一定的磨损，不能保证数据的一致性。为了研究磨损对轮胎力学性能的影响，基于轮胎印迹压力分布模型和毛刷模型理论，结合毛刷模型理论和橡胶块剪切刚度变形理论，建立了轮胎侧偏刚度模型建立了不同的磨损条件。根据不同磨损条件下的足迹测试结果建立足迹压力分布模型。并结合不同胎面磨损工况的试验结果，结合毛刷模型理论，建立了考虑胎面磨损情况的轮胎毛刷模型。基于上述理论模型，建立考虑胎面磨损状态的UniTire轮胎侧偏滑移模型。为验证模型的准确性，利用三种胎面磨损状态下的侧偏滑移数据得到UniTire侧偏滑移模型，并对其他胎面磨损状态下的轮胎力学性能进行预测。模型仿真结果与实验结果误差较小，有效证明了考虑胎面磨损的UniTire侧偏滑移模型的预测能力。