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TECHNICAL PAPERS

Analysis of a Hydrodynamic Bearing of a HDD Spindle Motor at Elevated Temperature

[+] Author and Article Information
G. H. Jang, K. S. Kim

PREMDepartment of Mechanical Engineering, Hanyang University, 17 Haengdang-dong, Seongdong-gu, Seoul, 133-791, Republic of Korea

H. S. Lee, C. S. Kim

Storage Lab., Samsung Advanced Institute of Technology, Suwon, 440-600, Republic of Korea

J. Tribol 126(2), 353-359 (Apr 19, 2004) (7 pages) doi:10.1115/1.1611500 History: Received February 11, 2003; Revised July 11, 2003; Online April 19, 2004
Copyright © 2004 by ASME
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References

Figures

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Rotating-shaft type of a HDB spindle motor
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Temperature variation on the top-cover and base of a HDD inside a computer
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Iterative method to determine the temperature and clearance of a bearing
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Groove geometry and parameters
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Axisymmetric finite element model of the HDB spindle motor for the analysis of heat conduction
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Temperature measurement around the periphery of the HDB spindle motor
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Finite element model of the HDB spindle motor for the analysis of thermal deformation
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HDB spindle motor with a thermocouple sensor
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Temperature distribution of the HDB spindle motor: (a) surrounding temperature of 28.7°C; and (b) surrounding temperature of 58.7°C.
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Variation of the load capacity of the upper journal bearing
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Variation of the stiffness coefficients of the upper journal bearing: (a) Kxx and (b) Kxy
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Variation of the damping coefficients of the upper journal bearing: (a) Cxx and (b) Cxy
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Variation of the load capacity of the upper thrust bearing
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Variation of the stiffness coefficients of the upper thrust bearing
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Variation of the damping coefficients of the upper thrust bearing

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