中文摘要：

用带屈服过程的塑性单元来描述橡胶材料的振幅相关性，研究了塑性单元个数和屈服点分布的确定方法。提出了一种由该塑性单元与超弹及粘弹单元叠加成的橡胶材料的粘弹塑性本构模型。根据橡胶材料特性实验拟合该模型中的材料参数，并将该理论模型转化成有限元软件中的材料参数建立橡胶材料的有限元模型。橡胶材料有限元仿真结果与实验结果吻合较好，可用于后续橡胶衬套建模以及悬架系统的分析。

英文摘要：

The plastic unit with a yielding process is used to describe rubber＇s amplitude-related characteristic, and the method to identify the number of plastic unit and the distribution of the yielding point is researched. A novel hyperelastic-viscoelastic-plastoelastic constitutive model of rubber is built and its parameters are identified according to the results of the rubber material property experiments. The theoretical model is transfered into the material parameters of rubber in the finite element software, which are used to create the finite element model of rubber material. Finite element simulation results of rubber are in good agreement with the experimental results, so the model can be used for subsequent modeling of rubber bushing and analysis of suspension system.