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提出一种新型电流变液阻尼器即电流变液锥形 (或楔形 )挤压式阻尼器模型的设计概念。该模型中 ,电流变液在锥形极板间形成的链状或柱状结构受到斜向的拉压作用 ,产生的能量耗散既不同于剪切式 ,又不同于正向挤压式 ,而且通过调整半锥角度 ,可以改变阻尼器的最大振动位移范围。作者对其模型进行了正弦激励下的动力学特性实验研究。同时 ,根据 Bingham塑性模型及润滑方程对锥形动态挤压流动过程进行了准定常近似分析计算 ,计算结果与阻尼器的动态实验结果进行了比较 ,两者符合得较好
A new design concept of rheological (or wedge-shaped) squeeze damper model of ER fluid damper is presented. In this model, the chain-like or columnar structures formed by the ERFs on the tapered plates are subjected to diagonal tension and compression. The resulting energy dissipation is different from that of the shear and the forward extrusion, and By adjusting the half cone angle, you can change the maximum vibration displacement range of the damper. The authors experimentally studied the dynamics of the model under sinusoidal excitation. At the same time, based on the Bingham plasticity model and the lubrication equation, the quasi-steady approximate analysis and calculation of the tapered dynamic extrusion flow process are carried out. The calculated results are in good agreement with the dynamic experimental results of the damper