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| Study on multi stable regions of journal hydrodynamic floating ring bearing-rotor system |
| GUO Hong1，ZHANG Zhi-ming2，ZHANG Shao-lin1，CEN Shao-qi1 |
1. School of Mechanical Engineering, Zhengzhou University, Zhengzhou 450001,China;
2. School of Mechatronic Engineering and Automation, Shanghai University, Shanghai 200072, China |
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Abstract The unitized dynamics model of journal and floating ring for a journal hydrodynamic floating ring bearing was established. The stability criterion of the journal floating ring bearing was obtained using Routh-Hurwitz method. The stiffness and damping coefficients under different operation conditons for this journal hydrodynamic floating ring bearing were calculated with finite difference method. On this base the judgment factors of stability criterion was acquired. The results show that floating ring bearing has multi stable regions under small eccentricity. At the same time, stable regions change with the eccentricity, radial clearance and lubricant temperature. The research fruits have great value in the model integrality and stability analyse of journal floating hybrid bearing.
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Received: 19 August 2014
Published: 15 January 2016
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