Magnetorheological fluid lubricated floating ring bearing and its application to rotor vibration control

Xiaohu Wang, Wen Lu, Hongguang Li, GuangMeng

Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 18-24.

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PDF(2152 KB)
Journal of Vibration and Shock ›› 2017, Vol. 36 ›› Issue (12) : 18-24.

Magnetorheological fluid lubricated floating ring bearing and its application to rotor vibration control

  • Xiaohu Wang, Wen Lu, Hongguang Li, GuangMeng
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Abstract

A controllable floating ring bearing (FRB) lubricated with magnetorheological fluid (MRF) is proposed due to its controllability and low cost of the self-made MRF. The Herschel-Bulkley (HB) model is introduced to model the behavior of MRF under shear circumstances with the shear-thinning effect incorporated. A magnetorheometer is set up to measure the properties of the MRF and then nonlinear regression method is adopted to identify the HB model parameters of the tested MRF. With these parameters, dynamic behaviors of the floating bearing along with its controllability of the rotor system is analyzed. Results demonstrate that the MRF lubricated FRB is capable of suppressing rotor vibration amplitudes. And compared to MRF lubricated common journal bearing, the MRF lubricated FRB performances better in rotor vibration control, and bears a lower journal friction while maintaining the ability to alter dynamic characteristics.

Key words

magnetorheological fluid / floating ring bearing / rotor system / vibration control

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Xiaohu Wang, Wen Lu, Hongguang Li, GuangMeng. Magnetorheological fluid lubricated floating ring bearing and its application to rotor vibration control[J]. Journal of Vibration and Shock, 2017, 36(12): 18-24

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