磁流变液润滑浮环轴承及其在转子振动控制中的应用

王小虎,陆雯,李鸿光,孟光

振动与冲击 ›› 2017, Vol. 36 ›› Issue (12) : 18-24.

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PDF(2152 KB)
振动与冲击 ›› 2017, Vol. 36 ›› Issue (12) : 18-24.
论文

磁流变液润滑浮环轴承及其在转子振动控制中的应用

  • 王小虎,陆雯,李鸿光,孟光
作者信息 +

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

  • Xiaohu Wang, Wen Lu, Hongguang Li, GuangMeng
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文章历史 +

摘要

利用自制磁流变液及其可控简单、成本低等优点,提出了一种使用磁流变液润滑的可控浮环轴承。采用Herschel-Bulkley模型对包含剪切稀化效应的磁流变液剪切特性进行了建模;通过自制的磁流变仪测试系统测试并识别了所制磁流变液的模型参数;利用识别的参数分析了磁流变液润滑浮环轴承的动态特性及可控性;分析了采用此种轴承的转子系统的抑振效果。结果表明,磁流变液润滑浮环轴承在外加磁场后有较好的振动抑制作用。同时,相较于磁流变液润滑普通滑动轴承,磁流变液润滑浮环轴承有更好的抑振效果,且减小了轴颈摩擦力矩,降低了摩擦功耗。

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.

关键词

磁流变液 / 浮环轴承 / 转子系统 / 振动控制

Key words

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

引用本文

导出引用
王小虎,陆雯,李鸿光,孟光. 磁流变液润滑浮环轴承及其在转子振动控制中的应用[J]. 振动与冲击, 2017, 36(12): 18-24
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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