Study on damp properties of magnetorheological damper

In order to research the properties of the new kind of smart contr ol lable fluid Magnetorheological(MR) fluid,in this paper,the rheological models were discussed.On the basis of analyzing the structure forms of the MR dampers,an improved structure of MR damper was conceived,then the properties of the novel MR damper were tested.The experimental results revealed that the Herschelbulkley model predicted the force-velocity well;the damping properties of the ameliorated structure of MR damper had been improved;and when the excitation was trigonal signal,the MR damper would reveal a thinning effect at high velocity;when the excitation was sinusoidal signal,the MR damper would reveal a nonlin ear hysteretic property between the damping force and relative velocity.At last,the main unsolved problems had been put forward.