Analysis on Influence of Oil Film Thickness on Temperature Field of Heavy Hydrostatic Bearing in Variable Viscosity Condition

Abstract:

According to the problem of the influence of oil film thickness on temperature rise for heavy hydrostatic thrust bearing during operation， build viscosity-temperature equation of lubricating oil film and mathematics model of oil film temperature rise of heavy hydrostatic bearing with multiple oil pads, simulate the temperature field of hydrostatic bearing with sector cavity under various oil film thickness using FVM(finite volume method), and reveal the influence law of oil film thickness of temperature rise for hydrostatic bearing. The results show that temperature distribution of hydrostatic bearing is much the same under various oil film thicknesses, but the influence of oil film thickness of temperature rise for hydrostatic bearing is greater. The results of numerical calculations actually response flow state inside hydrostatic bearing ，offer theoretical foundation for the design of hydrostatic bearing in engineering practice, and have important significance in improving operation stability of NC machine.

• Periodical: Advanced Materials Research (Volumes 239-242)
• Pages: 1418-1421
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.239-242.1418
• Online since: May 2011
• Authors: Yan Qin Zhang, Xiao Qiu Xu, Xiao Dong Yang, Hong Mei Li, Hui Jiang, Xiao Yang Yu, Zhi Min Shi
• Keywords: FVM, Hydrostatic Bearing, Oil Film Thickness, Variable Viscosity

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