A rapidly convergent finite element approach to determining the air bearing slider flying attitude is developed in the present investigation. The air flow between the slider and the disk is modeled by the generalized Reynolds equation. The equilibrium equation for the slider flying attitude includes both the suspension stiffness and the preload. These coupled, nonlinear equations are linearized by the Newton-Raphson method. Solutions are obtained by applying the Galerkin finite element method to the governing equations. The flying characteristics of a sub-ambient pressure shaped rail slider are studied using this proposed approach. The accuracy of the numerical solution is confirmed by comparison with experimental measurements.
Issue Section:
Research Papers
1.
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,” ASME Journal of Basic Engineering
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.2.
Castelli
V.
Pirvics
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1968
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.3.
Choi
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.4.
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R. M.
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M. S.
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.5.
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.6.
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Kaneko
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1990
, “A Database for Interpolation of Poiseuille Rates for High Knudsen Number Lubrication Problems
,” ASME JOURNAL OF TRIBOLOGY
, Vol. 112
, pp. 78
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.7.
Hardie, C. E., Menon, A., Crane, P., and Egbert, D., 1993, “Analysis and Performance Characteristics of the Seagate Advanced Air Bearing Slider,” presented at The Magnetic Recording Conference, Minneapolis.
8.
Hsia
Y.-T.
Domoto
G. A.
1983
, “An Experimental Investigation of Molecular Rarefaction Effects in Gas Lubricated Bearings at Ultra-Low Clearances
,” ASME JOURNAL OF LUBRICATION TECHNOLOGY
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.9.
Rohde, S. M., 1980, “Computational Techniques in the Analysis and Design of Fluid Film Bearings,” Tribology: Friction, Lubrication, and Wear, Szeri, A. Z., ed., McGraw Hill, New York.
10.
Ruiz
O. J.
Bogy
D. B.
1990
, “A Numerical Simulation of the Head-Disk Assembly in Magnetic Hard Disk Files: Part II—Solution of the Coupled System
,” ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol. 112
, pp. 603
–613
.11.
Strom, R. A., Crane, P., and Chapin, R. E., 1991, “Hour-Glass Disk Head Slider,” U.S. Patent No. 5,062,017.
12.
White
J. W.
Nigam
A.
1980
, “A Factored Implicit Scheme for the Numerical Solution of the Reynolds Equation at Very Low Spacing
,” ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol. 102
, pp. 80
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.13.
White
J. W.
1983
, “Flying Characteristics of the ‘Zero-Load’ Slider Bearing
,” ASME JOURNAL OF LUBRICATION TECHNOLOGY
, Vol. 105
, pp. 484
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.14.
Yamaura, H., and Ono, K., 1990, “Inverse Analysis of Flying Head Slider Bearings for Magnetic Disk Recording,” Proceedings of the Japan International Tribology Conference, pp. 1917–1922.
15.
Yoneoka, S., Katayama, M., Ohwe, T., Mizoshita, Y., and Yamada, T., 1991, “A Negative Pressure Microhead Slider for Ultralow Spacing with Uniform Flying Height,” presented at the MMM-Intermag Conference, Pittsburgh.
16.
Zienkiewicz, O. C., and Taylor, R. L., 1989, The Finite Element Method, Vol. 1, McGraw-Hill, New York, 4th ed.
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