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TECHNICAL PAPERS

Aerodynamically and Structurally Coupled Vibration of Multiple Co-Rotating Disks

[+] Author and Article Information
Jung Seo Park, I. Y. Shen

Department of Mechanical Engineering, University of Washington, Seattle, WA 98195-2600

J. Vib. Acoust 126(2), 220-228 (May 04, 2004) (9 pages) doi:10.1115/1.1687393 History: Received February 01, 2003; Revised July 01, 2003; Online May 04, 2004
Copyright © 2004 by ASME
Topics: Vibration , Disks , Vacuum
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References

Frees, G. M., 1995, “Disk Drive Spindle Dynamics—Analysis and Measurements,” ASME Advanced Information Storage Systems, Vol. 6, pp. 237–261.
Shen,  I. Y., and Roger,  C.-P., 1997, “A Non-Classical Vibration Analysis of Multiple Rotating Disks/Spindle Assembly,” ASME J. Appl. Mech., 64, pp. 165–174.
Shen,  I. Y., 1997, “Closed-Form Forced Response of a Damped, Rotating, Multiple Disk/Spindle System,” ASME J. Appl. Mech., 64, pp. 343–352.
Lee,  C. W., and Chun,  S. B., 1998, “Vibration Analysis of a Rotor with Multiple Flexible Disks Using Assumed Modes Method,” ASME J. Vibr. Acoust., 120, pp. 87–94.
Lee,  C. W., and Ham,  J. S., 1999, “Mode Identification for Rotating Rigid Shaft with Flexible Disks by Mode Splits,” J. Sound Vib., 225, pp. 425–446.
Parker,  R. G., 1999, “Analytical Vibration of Spinning, Elastic Disk-Spindle Systems,” ASME J. Appl. Mech., 66, pp. 218–224.
Jia,  H. S., 1999, “On the Bending Coupled Natural Frequencies of a Spinning, Multispan Timoshenko Shaft Carrying Elastic Disks,” J. Sound Vib., 221(4), pp. 623–649.
Lim,  S., 2000, “Finite Element Analysis of Flexural Vibrations in Hard Disk Drive Spindle Systems,” J. Sound Vib., 233(4), pp. 601–616.
Deeyiengyang,  S., and Ono,  K., 2001, “Analysis of Vibration of Hard Disk Spindle Caused by Ball Bearing,” Journal of Information Storage and Processing Systems, 3, pp. 89–99.
Yang,  J. P., Chen,  S. X., and Chong,  H. C., 2001, “Numerical Study of Dynamic Resonance Interactions Induced by Ball Bearing Defect Frequencies,” Journal of Information Storage and Processing Systems, 3, pp. 79–87.
Deeyiengyang,  S., and Ono,  K., 2001, “Suppression of Resonance Amplitude of Disk Vibrations by Squeeze Air Bearing Plate,” IEEE Trans. Magn., 37(2), pp. 820–825.
Jintanawan,  T., Shen,  I. Y., and Ku,  C.-P. R., 1999, “Free and Forced Vibration of a Rotating Disk Pack and Spindle Motor System with Hydrodynamic Bearings,” Journal of Information Storage and Processing Systems, 1, pp. 45–58.
Jintanawan,  T., and Shen,  I. Y., 2000, “Free Vibration of a Rotating Disk Pack and Spindle Motor System with Rotating Shaft Design,” Journal of Information Storage and Processing Systems, 2, pp. 129–139.
Jintanawa,  T., Shen,  I. Y., and Tanaka,  K., 2001, “Vibration Analysis of Fluid Bearing Spindles with Rotating-Shaft Design,” IEEE Trans. Magn., 37(2), pp. 799–805.
Tseng,  J.-G., and Wickert,  J. A., 1998, “Split Vibration Modes in Acoustically-Coupled Disk Stacks,” ASME J. Vibr. Acoust., 120, pp. 234–239.
Blevins, R. D., 1990, Flow-Induced Vibration, Van Nostrand Reinhold: New York, pp. 26–31.
Bittner,  H., and Shen,  I. Y., 1999, “Taming Disk/Spindle Vibrations through Aerodynamic Bearings and Acoustically Tuned-Mass Dampers,” IEEE Trans. Magn., 35, pp. 827–832.
Abrahamson, S. D., Chiang, C., and Eaton, J. K., 1991, “Flow Structure in Head-Disk Assemblies and Implications for Design,” ASME Advance Information Storage System, Vol. 1, pp. 111–132.
Shimizu,  H., Tokuyama,  M., Imai,  S., Nakamura,  S., and Sakai,  K., 2001, “Study of Aerodynamic Characteristics in Hard Disk Drives by Numerical Simulation,” IEEE Trans. Magn., 37(2), pp. 831–836.
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Figures

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Experimental setup in vacuum
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Frequency response functions of (0,4) modes measured in air; 4-disk configuration, top and bottom disks, ω3=0
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Waterfall plot of (0,4) disk modes; 4-disk configuration, bottom disk
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Waterfall plot measured in vacuum; 3-disk configuration, top disk
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Frequency response functions of (0,4) modes measured in air; 3-disk configuration, top and bottom disks, ω3=0
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A simplified mathematical model to prove frequency splitting by aerodynamic coupling
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Frequency response functions of (0,2) modes measured in vacuum; 4-disk configuration, top disk, ω3=0
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Coupled disk vibration of (0,2) modes from FEA
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Frequency response function from FEA for (0,2) modes
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Frequency response function from FEA for (0,4) modes
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Waterfall plot of (0,3) disk modes at various pressure; 3-disk configuration, top disk
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Waterfall plot of (0,4) disk modes; 3-disk configuration, bottom disk
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Waterfall plot measured in vacuum; 4-disk configuration, top disk
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Experimental setup in air

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