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2006, Volume 1, Issue 4

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Frontiers of Mechanical Engineering >> 2006, Volume 1, Issue 4 doi: 10.1007/s11465-006-0057-4

Study on damping properties of magnetorheological damper

1.Sichuan College of Information Technology, Guangyuan 628017, China; Institute of Sound and Vibration Control, Xi′an Jiaotong University , Xi′an 710049, China; 2.Institute of Sound and Vibration Control, Xi′an Jiaotong University , Xi′an 710049, China;

Available online: 2006-12-05
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Abstract

To research the properties of a new kind of smart controllable MR (magnetorheological) fluid, in this paper, the rheological models are discussed. On the basis of analyzing the structural forms of MR dampers, an improved structure of the MR damper is introduced; the properties of the novel MR damper are then tested. The experimental results reveal that the Herschel-Bulkley model predicts the force-velocity well; the damping properties of the ameliorated structure of the MR damper have improved; when the excitation is a trigonal signal, the MR damper reveals a thinning effect at high velocity; and when the excitation is a sinusoidal signal, the MR damper reveals a nonlinear hysteretic property between the damping force and relative velocity. Finally, the main unsolved problems have been put forward.

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