Author
G. S. A. Shawki
Bio: G. S. A. Shawki is an academic researcher from Cairo University. The author has contributed to research in topics: Bearing (mechanical) & Inertia. The author has an hindex of 5, co-authored 6 publications receiving 66 citations.
Papers
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TL;DR: A journal bearing test rig was designed and constructed to test the behavior of journals with wavy surfaces, the circumferential undulations being varied both in amplitude and in number as discussed by the authors.
26 citations
TL;DR: In this paper, a general solution for pressure distribution and load capacity for hydrodynamic bearing with non-Newtonian lubricating fluid films is obtained for bearing performance, and the flow behaviour index of the power law model assumed for the velocity profile is shown to play a significant role in bearing performance.
23 citations
17 citations
TL;DR: In this article, an analytical study has been carried out at the University of Cairo on the effect of convective inertia on film pressure and load capacity of full infinitely long journal bearings.
5 citations
5 citations
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TL;DR: In this article, the potential use of laser surface texturing (LST) in hydrodynamic journal bearings is examined theoretically, and the effect of such a texture on load capacity and on the attitude angle of the journal bearing is investigated.
Abstract: The potential use of laser surface texturing (LST) in hydrodynamic journal bearings is examined theoretically. The regular surface texture has the form of micro-dimples with preselected diameter, depth, and area density. It can be applied to only a certain portion of the bearing perimeter (partial LST) or the full bearing perimeter (full LST). The effect of such a texture on load capacity and on the attitude angle of the journal bearing is investigated in the present work. The optimum parameters of the dimples and favorable LST mode for maximum load capacity have been found.
139 citations
TL;DR: In this paper, a computer-aided study of static and dynamic performance characteristics and linear and nonlinear transient motion analysis of a flexible shell journal bearing system is presented, where trajectories of the journal-centre motion have been drawn to predict the transient response of the system.
48 citations
TL;DR: In this article, the authors present adiabatic solutions for a finite width hydrodynamic journal bearing with non-newtonian lubricants, obeying the power-law model.
38 citations
TL;DR: In this article, the effect of non-Newtonian behaviour of lubricants, resulting from the addition of polymers, on the performance of hydrodynamic journal bearings is investigated.
32 citations
TL;DR: In this paper, the effect of geometric imperfections of journal on the performance of micropolar lubricated 4-pocket hybrid journal bearing was theoretically described and numerically simulated results were presented for different forms of geometric irregularities of journal such as barrel shape, bellmouth shape, circumferential undulations along with the ideal shape for both the Newtonian and micropolic lubricant.
29 citations