Characteristics of Modified Spiral Thrust Bearing through Geometries and Dimension Modifications

Mohd Danial, Bin Ibrahim and Norliza, Binti Marusman and Sunami, Yuta and Siti Nur Azizah, Binti Amran and Saad Salahuddin, Bin Musa and Ochiai, Masayuki and Su, Shiung Lam (2018) Characteristics of Modified Spiral Thrust Bearing through Geometries and Dimension Modifications. Tribology Online, 13 (6). pp. 334-339. ISSN 1881-2198

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Abstract

This research focuses on the optimum design of fluid dynamic bearing (FDB) named modified spiral design. The objective is to improve the pressure and velocity distribution inside the FDB. In this paper, the current spiral design has 12 number of grooves while the modified spiral design has 24 number of grooves. Both design can be classified into two, bearing with seal and without seal. Air was chosen to replace the oil as the lubricant. Results show that the modified spiral bearing design has comparable characteristics compared to conventional spiral design in terms of pressure and velocity distribution. Modified spiral geometries also shows a tendency to replace the function of seals in FDB. This makes it possible to simplify bearing design without using any seal just by modifying its geometries based on novel modified spiral geometries. Experimental verifications also proved that the modified spiral bearing design has better air leakage control compared to the conventional ones. This phenomenon occurs in both design parameters, where when the designs are compared with respect to increase of rotational speed and air film thickness.

Item Type: E-Article
Uncontrolled Keywords: fluid dynamic bearing, modified spiral geometry, pressure distribution, air leakages, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, research, Universiti Malaysia Sarawak.
Subjects: T Technology > TJ Mechanical engineering and machinery
Divisions: Academic Faculties, Institutes and Centres > Faculty of Engineering
Depositing User: Gani
Date Deposited: 19 Feb 2019 03:53
Last Modified: 04 Jul 2019 07:53
URI: http://ir.unimas.my/id/eprint/23505

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