Analysis of dynamic characteristics of a HDD spindle system supported by ball bearing due to temperature variation

Gunhee Jang, D. K. Kim, J. H. Han, C. S. Kim

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

This paper presents a method to investigate the characteristics of a ball bearing and the dynamics of a HDD spindle system due to temperature variation. Finite element model is developed for the rotating and stationary parts of a HDD spindle system separately to determine their thermal deformations by using ANSYS, a finite element program. Then, the relative position of the rotating part with respect to the stationary part is determined by solving the equilibrium equation of the contact force between upper and lower ball bearings. The validity of the proposed method is verified by comparing the theoretical natural frequencies of a HDD spindle system with the experimental ones before and after temperature variation. The proposed method makes it possible to predict the characteristics of a ball bearing and the dynamics of a HDD spindle system due to temperature variation. It shows that the elevated temperature results in the increase of contact angle and the decrease of bearing deformation, contact force and bearing stiffness, which result in the decrease of the natural frequencies of a HDD spindle system.

Original languageEnglish
Pages (from-to)243-249
Number of pages7
JournalMicrosystem Technologies
Volume9
Issue number4
DOIs
StatePublished - 2003 Jan 1

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ball bearings
Ball bearings
spindles
dynamic characteristics
Bearings (structural)
Natural frequencies
resonant frequencies
Temperature
temperature
equilibrium equations
Contact angle
Stiffness
stiffness

Cite this

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abstract = "This paper presents a method to investigate the characteristics of a ball bearing and the dynamics of a HDD spindle system due to temperature variation. Finite element model is developed for the rotating and stationary parts of a HDD spindle system separately to determine their thermal deformations by using ANSYS, a finite element program. Then, the relative position of the rotating part with respect to the stationary part is determined by solving the equilibrium equation of the contact force between upper and lower ball bearings. The validity of the proposed method is verified by comparing the theoretical natural frequencies of a HDD spindle system with the experimental ones before and after temperature variation. The proposed method makes it possible to predict the characteristics of a ball bearing and the dynamics of a HDD spindle system due to temperature variation. It shows that the elevated temperature results in the increase of contact angle and the decrease of bearing deformation, contact force and bearing stiffness, which result in the decrease of the natural frequencies of a HDD spindle system.",
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Analysis of dynamic characteristics of a HDD spindle system supported by ball bearing due to temperature variation. / Jang, Gunhee; Kim, D. K.; Han, J. H.; Kim, C. S.

In: Microsystem Technologies, Vol. 9, No. 4, 01.01.2003, p. 243-249.

Research output: Contribution to journalArticle

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