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TECHNICAL PAPERS

Improvement of the Static and Dynamic Characteristics of Magnetic Head Sliders by Optimum Design

[+] Author and Article Information
Hiromu Hashimoto

Vice Dean, School of Engineeringe-mail: hiromu@keyaki.cc.u-tokai.ac.jp

Yasuhisa Hattori

Department of Mechanical Engineering, Tokai University, 1117 Kilakaname, Hiratsuka, Kanagawa 259-1292, Japan

J. Tribol 122(1), 280-287 (Jul 06, 1999) (8 pages) doi:10.1115/1.555372 History: Received February 18, 1999; Revised July 06, 1999
Copyright © 2000 by ASME
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References

Ono,  K., 1975, “Dynamic Characteristics of Air-Lubricated Slider Bearing for Noncontact Magnetic Recording,” ASME J. Lubr. Technol., 97, No. 2, pp. 250–260.
Kogure,  K., Fukui,  S., Mitsuya,  Y., and Kaneko,  R., 1983, “Design of Negative Pressure Slider for Magnetic Recording Disks,” ASME J. Lubr. Techol., 105, No. 3, pp. 496–502.
White,  J. W., 1983, “Flying Characteristics of the Zero-Load Slider Bearing,” ASME J. Lubr. Technol. 105, No. 3, pp. 484–490.
White, J. W., 1984, “Flying Characteristics of the 3370-Type Slider on a 5 1/4-inch disk—Part I: Static analysis,” ASLE SP-16, Tribology and Mechanics of Magnetic Storage Systems, 1 , pp. 72–76.
White, J. W., 1986, “An Air Bearing Slider with Uniform Flying Height and Fast Take-off Characteristics,” ASLE SP-21, Tribology and Mechanics of Magnetic Storage Systems, 3 , pp. 95–101.
Nishihara, H. S., Dorius, L. K., Bolasna, S. A., and Best, G. L., 1988, “Performance Characteristics of the IBM 3380K Air Bearing Design,” STLE SP-25, Tribology and Mechanics of Magnetic Storage Systems, 5 , pp. 117–123.
Hashimoto, H., 1997a, “Optimization of Oil Flow Rate and Oil Film Temperature Rise in High Speed Hydrodynamic Journal Bearings,” Proceedings of the 24th Leeds-Lyon Symposium on Tribology, pp. 205–210.
O’Hara,  M. A., and Bogy,  D. B., 1995, “Robust Design Optimization Techniques for Ultra-Low Flying Sliders,” IEEE Transactions on Magnetics, 31, No. 6, pp. 2955–2957.
O’Hara,  M. A., Hu,  Y., and Bogy,  D. B., 1996, “Effects of Slider Sensitivity Optimization,” IEEE Transactions on Magnetics, 32, No. 5, pp. 3744–3746.
Lu,  S., Hu,  Y., O’Hara,  M., Bogy,  D. B., Bhatia,  C. S., and Hsia,  Y.-T., 1996, “Air Bearing Design, Optimization, Stability Analysis and Verification for Sub-25 nm Flying,” IEEE Transactions on Magnetics, 32, No. 1, pp. 103–109.
Bogy,  D. B., Lu,  S., O’Hara,  M. A., and Zhang,  S., 1998, “Some Advanced Air-Bearing Design Issues for Proximity Recording,” ASME J. Tribol., 120, No. 3, pp. 566–570.
Hashimoto,  H., and Kato,  Y., 1987, “A Study of the Characteristic Analysis of High-Speed Journal Bearings (Optimum Design of Journal Bearings),” JSME International Journal, 30, No. 262, pp. 632–637.
Hashimoto,  H., 1997b, “Optimum Design of High-Speed, Short Journal Bearings by Mathematical Programming,” STLE Tribology Transactions, 40, No. 2, pp. 283–293.
Fukui,  S., and Kaneko,  R., 1988, “Analysis of Ultra-Thin Gas Film Lubrication Based on Linearized Boltzmann Equation: First Report—Derivation of a Generalized Lubrication Equation Including Thermal Creep Flow,” ASME J. Tribol., 110, No. 2, pp. 253–261.
Fukui,  S., and Kaneko,  R., 1990, “A Database for Interpolation of Poiseuille Flow Rates for High Knudsen Number Lubrication Problems,” ASME J. Tribol., 112, No. 1, pp. 78–83.
Kang,  S.-C., Crone,  R. M., and Jhon,  M. S., 1999, “A New Molecular Gas Lubrication Theory Suitable for Head-Disk Interface Modeling,” J. Appl. Phys., 85, pp. 5594–5596.
Ruiz,  O. J., and Bogy,  D. B., 1990, “A Numerical Simulation of the Head-Disk Assembly in Magnetic Hard Disk Files: Part I—Component Models,” ASME J. Tribol., 112, No. 4, pp. 593–602.

Figures

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Schematic of a magnetic head slider
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Variation of spacing with slider rail width
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Variation of spacing with taper length
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Variation of spacing with taper angle
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Variation of spacing with suspension position
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Variation of spacing with suspension preload
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Resonant frequency and amplitude ratio variation with slider rail width
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Resonant frequency and amplitude ratio variation with taper length
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Resonant frequency and amplitude ratio variation with taper angle
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Resonant frequency and amplitude ratio variation with suspension position
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Resonant frequency and amplitude ratio variation with suspension preload
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Flow chart for the optimum design methodology
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Comparison of optimum solutions with random solutions

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