Abstract
Since the viscosity of sea water is low, it is difficult to form the lubrication film, the overload and the “liner burn” phenomenon of the seawater. Lubricated hydrostatic-dynamic hybrid thrust bearing are happening so frequently that the operation stability and service life are reduced drastically. Therefore, it is necessary to analyze the maximum bearing capacity of the thrust bearing in order to prevent the phenomenon of “liner burn”. The film thickness have the great influence on the load performance of seawater thrust bearing so that the rules of film thickness on static, dynamic and vibration performance of the bearing is quantitatively studied in the paper. First, the structural features, the flow channel, the bearing mechanism and primarily parameters of seawater thrust bearing are derived. Subsequently calculating equations of hydrodynamic, hydrostatic and the total capacity are deduced. Second, the carrying capacity, static stiffness and power loss are selected as the static property indexes. The adjustment time, dynamic stiffness and phase margin are selected as dynamic property indexes. The natural frequency, active and passive amplitude coefficients are selected as vibration property indexes. Finally, under constant-flow and PM-Controller supply model, the change rules between the performance indexes and film thickness are quantitatively analyzed. The results show that as film thickness increases carrying capacity, static stiffness, power loss, dynamic stiffness and natural frequency decreased conversely, and phase margin and passive amplitude coefficients remain the same, and then adjustment time, active amplitude coefficients increased in constant-flow supply model. The proposed research analyzed the influence of film thickness on static, dynamic and vibration performance of seawater thrust bearing and provided a basis for the design of the bearing.
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Acknowledgement
The project was financially supported by Younger Teachers Independent Research Program Science B Series of Yanshan University (13LGB003) and Doctoral Fund Project of Yanshan University (B815).
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Jianhua, Z., Dianrong, G., Qiang, W. (2017). Effect of Film Thickness on Load-Carrying Property of Seawater Dynamic-Hydrostatic Hybrid Thrust Bearing. In: Xhafa, F., Patnaik, S., Yu, Z. (eds) Recent Developments in Intelligent Systems and Interactive Applications. IISA 2016. Advances in Intelligent Systems and Computing, vol 541. Springer, Cham. https://doi.org/10.1007/978-3-319-49568-2_9
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DOI: https://doi.org/10.1007/978-3-319-49568-2_9
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