Robust shaft design against shaft deformation in hub press-fitting and disk clamping processes of a 2.5 HDD

Title
Robust shaft design against shaft deformation in hub press-fitting and disk clamping processes of a 2.5 HDD
Authors
장건희
Issue Date
2015-06
Publisher
ASME
Citation
Microsystem Technologies, June 2016, Volume 22, Issue 6, pp 1299–1305
Abstract
We investigated deformation of the outer diameter of a shaft due to the hub press-fitting and disk clamping processes associated with a 2.5″ hard disk drive. We propose a new robust shaft design to minimize the effect of deformation on the outer diameter of the shaft. We numerically show the effect of deformation on the shaft due to the pressure, stiffness, and damping coefficients of fluid dynamic bearings (FDBs), and the critical mass and excitation response of the rotor-bearing system. We also experimentally measured the axial non-repeatable runout and the amplitude at the half speed whirl frequency of FDBs with both conventional and proposed designs. Through these tests we confirm that the proposed design improves the static and dynamic performance of the FDBs and rotor-bearing system.
URI
http://link.springer.com/article/10.1007/s00542-016-2850-2http://hdl.handle.net/20.500.11754/25586
ISSN
0946-7076; 1432-1858
DOI
http://dx.doi.org/10.1007/s00542-016-2850-2
Appears in Collections:
COLLEGE OF ENGINEERING[S](공과대학) > MECHANICAL ENGINEERING(기계공학부) > Articles
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