Professor of School of Engineering, Design and Built Environment, Western Sydney University, Australia. His research interests cover Industry 4.0, Additive Manufacturing, Advanced Engineering Materials and Structures (Metals and Composites), Multi-scale Modelling of Materials and Structures, Metal Forming and Metal Surface Treatment.
Abstract—In the present work, computations of performance of symmetric hybrid worn slot-entry journal bearing under turbulent lubrication have been investigated. The model of abrasive wear given by Dufrane has been used to determine the wear on the surface of bearing because of starting and stopping operations. For wear and turbulent lubrication, the Reynolds equation has been modified using Constantinescu turbulent model. This modified equation has been solved by applying the finite element method. The effects of wear and turbulent lubrication on the characteristics of bearing have been evaluated for different Reynolds number and wear depth parameter. Minimum thickness of the fluid film and damping coefficients are more for the unworn bearing having slot width ratio (SWR) of 0.25 than the bearing with SWR of 0.5 and 0.75 operates at a constant value of Reynolds number but these values reduce for bearings as wear depth parameter increases. Further, it is also observed that as wear depth parameter value increases, stability threshold speed gets reduced for bearing operates at slot width ratio 0.25, 0.5 and 0.75 for constant Reynolds number.
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