ABSTRACT
In this paper, by using the method of orthogonal experiment, the influence of magnetor-heological (MR) fluid’s components on its performance and the influence mechanism is studied. The results show that the main function of oleic acid is improving the dissolving capacity of particles and the OP emulsifying agent is improving the disperse capacity of particles. Based on above experimental results and lots of concrete comparative experiments, a kind of high shear yielding stress and low sedimentation MR fluid is got. Based on the performance of MR fluid and characteristics of magnetic circuit, a MR damper that maximum voltage required is 9V, rated current is 2A and peak power required is less than 20W was designed and manufactured. And then, the damping properties and response time of this damper was tested. The results show that the real response time of this damper is about 0.2~0.3 second and the ideal response time is about 10 milliseconds. Finally, the influence factors on the real response time are analyzed.
