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设计制作了一种新型的复合阻尼器,并在电液伺服动静万能试验机上对其进行了性能试验,重点研究了阻尼器在低频(1Hz)下的工作性能,并采用修正的非线性滞回双粘性模型,结合试验结果,确定了其中的模型参数.研究得到将永久磁场和电流磁场结合起来从而实现阻尼器的逆向控制的设计思路是可行的,铜质隔磁环的设置保证了磁力线沿理论设计的路径穿行,又使线圈避免与磁流变液的长期接触腐蚀从而提高其耐久性.所采用的修正的非线性滞回双粘性模型较好地模拟了阻尼器的低频性能,为此类阻尼器在低频下的应用提供了理论依据.阻尼器的阻尼力-位移滞回曲线比较饱满,阻尼力-速度曲线基本符合理论假定.在0.1~1Hz频段内,修正的非线性滞回双粘性模型中的各参数取值较为稳定.
A new type of compound damper was designed and manufactured. The performance test was carried out on the electro-hydraulic servo static and dynamic universal testing machine. The working performance of the damper at low frequency (1Hz) was studied emphatically. The modified nonlinear hysteresis Double viscous model and the experimental results, the model parameters are determined.The design idea that the permanent magnetic field and the current magnetic field are combined to realize the reverse control of the damper is feasible, and the arrangement of the copper magnetic isolation ring ensures that the magnetic line The theoretical design of the path through, but also to avoid long-term contact with the magnetorheological fluid corrosion so as to improve its durability.The modified nonlinear hysteresis double-viscous model to better simulate the low-frequency performance of the damper, The damping force-displacement hysteresis curve of the damper is full, and the damping force-velocity curve basically conforms to the theoretical assumption.In the frequency range of 0.1 ~ 1Hz, the modified nonlinear hysteresis double The parameters in the viscous model are relatively stable.