磁流变阻尼器是一种应用前景广阔的半主动控制阻尼器。基于对磁流变阻尼器的实验 ,建立了描述磁流变阻尼器阻尼特性的 Bingham塑性模型和非线性滞回模型。讨论了施加电压(磁场强度 )、激振振幅及频率对两种模型的参数的影响。该文提出的非线性滞回模型具有精度高、参数识别过程简单和准确反映磁流变阻尼器滞回特性等优点 Magnetorheological damper is a promising semi-active control damper. Based on experiments on MR damper, a Bingham plastic model and a nonlinear hysteresis model describing the damping characteristics of the MR damper are established. The effects of applied voltage (magnetic field strength), excitation amplitude and frequency on the parameters of the two models are discussed. The nonlinear hysteresis model proposed in this paper has the advantages of high precision, simple parameter identification process and accurate reflection of hysteresis characteristics of MR damper