The oscillatory squeeze flow of electrorheological fluid considering the inertia effect
The oscillatory squeeze flow of electrorheological fluid considering the inertia effect
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DOI：
10.1088/0964-1726/11/4/310
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发表时间：
2002-08
影响因子：
4.1
通讯作者：
Chun-Ying Lee;C. Wen
中科院分区：
文献类型：
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作者：
Chun-Ying Lee;C. Wen
本文从理论上研究了两个圆形电极之间的电流变（ER）流体受到振荡挤压流的影响。 ER 流体被建模为具有类 Bingham 行为的双粘性流体。考虑了由于流体振荡流动而产生的惯性。该解是在复数域中导出的。数值计算了上电极上的总反作用力的大小及其相对于电极位移的相位滞后。结果表明，相位滞后对惯性效应的影响比对反作用力大小的影响更为敏感。研究结果还表明，在反作用力大小10%的差异范围内，准静态模型可以在驱动频率低于400 Hz的情况下使用。
The electrorheological (ER) fluid between two circular electrodes subjected to oscillatory squeeze flow is studied theoretically in this paper. The ER fluid is modeled as a bi-viscous fluid with Bingham-like behavior. The inertia due to the oscillatory flow of the fluid is taken into account. The solution is derived in the complex domain. The magnitude of the total reactive force on the upper electrode and its phase lag with respect to the electrode displacement are calculated numerically. The results show that the phase lag is more sensitive to the inertia effect than the magnitude of the reactive force. It is also shown that, within 10% discrepancy in the magnitude of reactive force, the quasi-static model can be used with actuating frequency lower than 400 Hz for the examples studied.