Behavior of air-oil interface in the FDBs with double sealing structure in a 2.5 HDD

Title
Behavior of air-oil interface in the FDBs with double sealing structure in a 2.5 HDD
Other Titles
Dynamic behavior of air-oil interface in fluid dynamic bearings with a double sealing structure in a 2.5" hard disk drive due to non-operating axial shock
Authors
장건희
Keywords
Fluid dynamic bearings; Non-operating axial shock; Oil; leakage; Air-oil interface
Issue Date
2015-06
Publisher
ELSEVIER SCI LTD
Citation
Tribology International, Volume 98, June 2016, Pages 306–316
Abstract
We propose a numerical procedure to investigate the oil leakage of FDBs with a double sealing structure in a 2.5" HDD due to non -operating axial shock. We confirm the validity of the proposed procedure via a drop test to observe oil leakage of FDBs from the motion of rotor and stator under axial shock. We simulate the two-phase flow of air and oil in FDBs using a finite-volume method and a volume of fluid method to investigate the unsteady motion and break-up of the air-oil interfaces during and after axial shock. Furthermore, we analyze the axial shock -induced motion of air-oil interfaces due to magnitude of shock, and various design variables of the FDBs and the capillary seal. (C) 2016 Elsevier Ltd. All rights reserved.
URI
http://www.sciencedirect.com/science/article/pii/S0301679X16001183http://hdl.handle.net/20.500.11754/25587
ISSN
0301-679X; 1879-2464
DOI
http://dx.doi.org/10.1016/j.triboint.2016.02.033
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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