电流变液中可控阻尼振动研究

The Research on Damping Vibration Controlled in Electrorheological Fluids

基于电流变液的粘度随电场强度变化的原理,利用摄动方法研究了在电流变液中可控阻尼振动的运动规律,导出了运动方程,得到了振动系统的频移和相移,系统振动的角频率随场强的增加而降低,且振动的振幅随电场强度的平方成指数减小,对同样大小的稳恒电场和交变电场,在交变电场中的振动衰减较快,当时间为1 E2ε时振动终止.

Based on the principle that the viscosity of electrorheological fluids changes according to the electric field intensity,the movement law of damping vibration controlled in electrorheological fluids are investigated by using disturbance method,the movement equation is derived,and shift for frequency and shift for phase is derived.With the electric field intensity increases,the frequencies for angle are reduced;so with index's square for electric field's intensity,the amplitude of system's vibration is reduced.For the same intensity of steady electric field and alternating electric field,the vibration is faster attenuated in the alternating electric field.While time amounts 1/E2ε,the vibration will be stopped.