Title: Theoretical investigation of boundary slip on the hydrodynamic lubrication performance in pocketed bearings including cavitation

Authors: M. Muchammad; Mohammad Tauviqirrahman; Ariawan Wahyu Pratomo; J. Jamari; Dirk Jan Schipper

Addresses: Laboratory for Surface Technology and Tribology, Faculty of Engineering Technology, University of Twente, Drienerloolan 5, Postbus 217, 7500 AE, Enschede, The Netherlands; Laboratory for Engineering Design and Tribology, Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Soedarto, SH, Tembalang, Semarang 50275, Indonesia ' Laboratory for Engineering Design and Tribology, Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Soedarto, SH, Tembalang, Semarang 50275, Indonesia ' Laboratory for Engineering Design and Tribology, Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Soedarto, SH, Tembalang, Semarang 50275, Indonesia ' Laboratory for Engineering Design and Tribology, Department of Mechanical Engineering, Diponegoro University, Jl. Prof. Soedarto, SH, Tembalang, Semarang 50275, Indonesia ' Laboratory for Surface Technology and Tribology, Faculty of Engineering Technology, University of Twente, Drienerloolan 5, Postbus 217, 7500 AE, Enschede, The Netherlands

Abstract: Boundary slip in bearings is becoming more and more popular to improve the hydrodynamic performance (pressure and shear stress). However, most of previously published works regarding textured bearings neglected the cavitation effect and make their results questionable. The main aim of this paper is to investigate the hydrodynamic performance of slip pocketed bearings considering cavitation by a theoretical approach. Cavitation was of particular interest with respect to pressure generation and shear stress. One main result presented here was that slip over the whole surface could retard the presence of cavitation and therefore the generated pressure and shear stress could be optimal. The work presented here leads to a design reference guideline that could be used by the designer/engineer to design slip pocketed bearings for improving the hydrodynamic performance.

Keywords: cavitation; hydrodynamic performance; boundary slip; pocketed bearing.

DOI: 10.1504/IJSURFSE.2017.084669

International Journal of Surface Science and Engineering, 2017 Vol.11 No.2, pp.100 - 117

Received: 08 Mar 2016
Accepted: 24 Jun 2016
Published online: 20 Jun 2017 *

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