考虑空气弹簧橡胶气囊力学特性，采用摩擦模型和分数导数Kelvin-Voigt模型对橡胶气囊进行建模，描述橡胶气囊的振幅相关性和频率相关性。以带节流孔和附加气室的空气弹簧为研究对象，建立该空气弹簧的非线性模型。在空气弹簧标准工作高度(即平衡点)附近，基于一阶泰勒展开和割线法建立带节流阻尼孔和附加气室的空气弹簧系统线性模型。以某空气弹簧为例，辨识空气弹簧橡胶气囊的模型参数，试验验证了橡胶气囊模型的有效性;分析该系统的动态特性，讨论橡胶气囊力学特性对整个空气弹簧动态特性的影响。该模型的建立为进一步研究空气阻尼悬架的刚度和阻尼设计、匹配提供了理论依据和有效参考。

Considering mechanic characteristics of the rubber bellow, the bellow model is composed of friction model and fractional derivative Kelvin-Voigt model for representing amplitude dependence and frequency dependence of the bellow. Regarding air spring with throttling damping orifice and auxiliary chamber as the research object, A nonlinear model of air spring is established. Near the standard working height of the air spring (namely equilibrium point), a linearized model is set up by adopting the first order Taylor expansion and secant method. Taking an air spring as an example, the parameters of bellow model have been identified and the validity of bellow model put forward is verified by the experiments. Finally, this paper analyzes the dynamic characteristics of the system and discusses the influences of mechanic characteristics of the bellow on the dynamic characteristic of the whole system. The model provides the theoretical foundation and valuable reference for the further study of the design and match of stiffness and damping of air suspension.