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在稳态指数统一模型的基础上，根据动态过程有效滑移率的微分表达，建立轮胎非稳态侧偏特性非线性仿真模型。在实验中发现当用有效滑移率和准稳态概念来计算回正力臂 Ｄｘ 时，有滑移率超前而回正力臂滞后现象，该现象可以通过一个一阶滤波器来表达。模型的计算结果与实验结果对比，表明该模型可以反映轮胎非线性侧偏特性，可以用于汽车操纵动力学研究。
Based on the unified model of steady index, a nonlinear simulation model of tire unsteady lateral deflection is established based on the differential expression of effective slip ratio of dynamic process. It is found in the experiment that when the positive arm Dx is calculated by the concept of effective slip ratio and quasi-steady state, the slip ratio leads to the positive arm hysteresis. This phenomenon can be expressed by a first-order filter. The results of the model are compared with the experimental results. The results show that the model can reflect the non-linear tire lateral characteristics and can be used in the research of vehicle maneuvering dynamics.