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has been cited by the following article:

• TITLE: Research on Lubrication Model of Rock Bit Bearings with Non-Newtonian Medium

  AUTHORS: Guorong Wang, Wang Juan, Lin Zhong

  KEYWORDS: Journal Bearing; Rock Bit; Lubrication Model; RB Grease

  JOURNAL NAME: Modern Mechanical Engineering, Vol.2 No.1, February 29, 2012

  ABSTRACT: Lubrication media of rock bit journal bearing is non-Newtonian fluid, and because of structure limitations, lubricant supply is only from the inside track and its rheological properties are relatively complex. In general studies, the non- Newtonianism of lubrication media of rock bit journal bearing is neglected to simplify the research process. Based on the universal Reynolds equation of non-Newton media, the mathematical model of lubrication analysis was suitable for the rock bit bearing working conditions was established. Then according to the experimental results of rheological properties of RB-type lubricating grease, the equivalent viscosity of the model was established and this model can be solved by the method used in solving the Reynolds equation of Newton fluid.