Transactions of the Korean Society for Noise and Vibration Engineering (한국소음진동공학회논문집)

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Vibration Analyses of HDD Spindle Systems Supported by Hydrodynamic Bearings Taking into Account Stator's Flexibility

고정자의 유연성을 고려한 유체베어링 지지 HDD 스핀들 계의 진동해석

  • 임승철 (명지대학교 기계공학과) ;
  • 전상복 (한국산업기술대학교 기계설계학과) ;
  • 한윤식 (삼성전자 스토리지 사업부) ;
  • 이호성 (삼성전자 스토리지 사업부) ;
  • 김철순 (삼성종합기술원 스토리지 랩)
  • Published : 2005.06.01
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Abstract

This paper presents vibration analyses of hard disk drive (HDD) spindle systems based on the finite element method. The systems under investigation have a cantilevered shaft rotating on hydrodynamic bearings. In particular, the influence of stator's flexibility on major modes has been taken into account in dual ways lumped and distributed-parameter model approfches. Even the latter employs relatively macroscopic elements instead of extremely fine ones Popular in commercial codes. In order to prove the effectiveness of such formulated models, two types of HDD prototypes featuring different hub and stator structures are selected as examples. Compared to the first, the second type has a reinforced stator that would raise the natural frequency of the hub's translational (or sideway) mode. Both free and forced vibration characteristics are computed, and subsequently compared with the experimental data. It is our conclusion that Particularly the Proposed distributed model method is an efficient design tool for state-of-the-art HDD spindle systems.

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References

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