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

The Korean Society for Noise and Vibration Engineering (한국소음진동공학회)
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Finite Element Modal Analysis of a Spinning Flexible Disk-spindle System Considering the Flexibility of Supporting Structures and an Head-suspension-actuator in a HDD

지지구조와 헤드-서스펜션-액추에이터의 유연성을 고려한 HDD 유연 회전 디스크-스핀들 시스템의 유한 요소 고유 진동 해석

  • 서찬희 (한양대학교 대학원 기계공학과) ;
  • 이호성 (삼성전자 Storage 사업부) ;
  • 장건희 (한양대학교 기계공학과)
  • Published : 2007.01.20
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Abstract

This paper presents a finite element method to analyze the free vibration of a flexible HDD composed of the spinning disk-spindle system with fluid dynamic bearings(FDBs), the head-suspension-actuator with pivot bearings, and the base plate with complicated geometry. Experimental modal testing shows that the proposed method well predicts the vibration characteristics of a HDD. This research also shows that even the vibration motion of the spinning disk corresponding to half-speed whirl and the pure disk mode are transferred to a head-suspension-actuator and base plate through the air bearing and the pivot bearing consecutively. The proposed method can be effectively extended to investigate the forced vibration of a HDD and to design a robust HDD against shock.

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References

  1. Tseng, C. W., Shen, J. Y and Shen, I. Y, 2003, 'Vibration of Rotating-shaft HDD Spindle Motors with Flexible Stationary Parts', IEEE Trans Magn, Vol. 39, pp. 794-799 https://doi.org/10.1109/TMAG.2003.808926
  2. Jang, G. H., Han, J. H. and Seo, C. H., 2005, 'Finite Element Modal Analysis of a Spinning Flexible Disk-spindle System m a HDD Considering the Flexibility of Complicated Supporting Structure' , Microsystem Technologies, Vol. 11, No.7, pp. 488-498 https://doi.org/10.1007/s00542-005-0597-2
  3. Xu, L. M. and Guo, N., 2003, 'Modal Testing and Finite Element Modelling of Subsystem in Hard Disk Drive' , Mechanical System and Signal Processing, Vol. 17, No. 4, pp. 747-764 https://doi.org/10.1006/mssp.2002.1508
  4. Jayson, E. M., Smith P. W. and Talke, F. E., 2003, 'Shock Modeling of the Head-media Interface in an Operational Hard Disk Drive' , IEEE Trans Magn, Vol. 39, pp. 2429-2431 https://doi.org/10.1109/TMAG.2003.816427
  5. Gao, Feng, Yap, F. F. and Yan, Y., 2005, 'Modeling of Hard Disk Drives for Vibration Analysis Using a Flexible Multibody Dynamics Formulation' , IEEE Trans Magn, Vol. 41, No. 2, pp. 744-749 https://doi.org/10.1109/TMAG.2004.840329
  6. Jang, G. H., Lee, S. H. and Kim, H. W., 2006, 'Finite Element Analysis of the Coupled Journal and Thrust Bearing in a Computer Hard Disk Drive' , ASME Journal of Tribology, Vol. 128, pp. 335-340 https://doi.org/10.1115/1.2162918
  7. Jang, G. H. and Jeong, S. W., 2003, 'Analysis of a Ball Bearing with Waviness Considering the Centrifugal Force and Gyroscopic Moment of the Ball' , ASME Journal of Tribology, Vol. 125, No. 3, pp. 487-498 https://doi.org/10.1115/1.1538618
  8. Choi, C. K. and Lee, T. Y., 2001, 'Development of Flat Shell Elements with Directly Modified Non-conforming Modes and Analysis of Shell Structures' , Department of Civil Engineering Korea Advanced Institute of Science and Technology
  9. Hughes, T. J. R. and Brezzi, F., 1989, 'On Drilling Degrees of Freedom' , Computer Methods in Applied Mechanics and Engineering, Vol. 72, pp. 105-121 https://doi.org/10.1016/0045-7825(89)90124-2
  10. Donea, J. and Lamain, L. G., 1987, 'A Modified Representation of Transverse Shear in Quadrilateral Plate Elements' , Computer Methods in Applied Mechanics and Engineering, Vol. 63, pp. 183-207 https://doi.org/10.1016/0045-7825(87)90171-X
  11. Cook, R. D., Malkus, D. S. and Plesha, M. E., 1989, Concepts and Applications of Finite Element Analysis, 3rd edn. John Wiley & Sons
  12. Lehoucq, R. B. and Sorensen, D. C., 1996, 'Deflation Techniques for an Implicitly Restarted Arnoldi Iteration' , J. Matrix anal. Appl, SIAM, pp. 789-821