The effect of a time-dependent electric field on the dynamic performance of an electrorheological fluid in squeeze

摘要: An investigation was carried out into the effect of an ac electric field on performance electrorheological (ER) fluid in oscillatory squeeze flow under various mechanical and electrical conditions. The sandwiched between two parallel circular electrodes, upper one fixed lower forced to oscillate sinusoidally normal its own plane. It is shown how force transmitted across greater with dc low-frequency fields. Furthermore, it seen that rheological highly dependent shape input waveform, a square wave producing optimum working response. results suggest dynamic compressive-tensile loading, chain structure destroyed at high frequencies, does not have time reform. In addition, when energized by sinusoidal compares very well predicted theoretical model which assumes bi-viscous characteristic. Finally, implications vibration control, where ER employed short-stroke device, are highlighted.