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对电流变减振器模型在正弦位移信号作用下的阻尼力响应及阻尼耗散能量进行了实验研究。结果表明,电流变流体在电场作用下其阻尼是可控的,当无电场作用时,电流变流体的阻尼是线性粘性阻尼,随着电场强度的增加,其阻尼由线性向非线性转变,属于滞后型阻尼,同时,阻尼耗散能量随之增加。通过对响应的频谱分析发现,其响应的高次谐波的频率均为基频的奇数倍。
The damping force response and the damping dissipated energy of ERM model under sinusoidal displacement are experimentally studied. The results show that the damping of electrorheological fluid under the action of electric field is controllable. When there is no electric field, the damping of electrorheological fluid is linear viscous damping. As the electric field strength increases, the damping of the electrorheological fluid changes from linear to non-linear, which belongs to Hysteresis damping, at the same time, damping energy dissipation increases. By analyzing the spectrum of the response, it is found that the frequency of the higher harmonics of its response is an odd multiple of the fundamental frequency.