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TECHNICAL PAPERS

A New Finite-Element Based Suspension Model Including Displacement Limiters for Load/Unload Simulations

[+] Author and Article Information
Stefan Weissner, Uwe Zander, Frank E. Talke

University of California, San Diego, Center for Magnetic Recording Research, La Jolla, CA 92093-0401

J. Tribol 125(1), 162-167 (Dec 31, 2002) (6 pages) doi:10.1115/1.1506314 History: Received July 20, 2001; Revised June 12, 2002; Online December 31, 2002
Copyright © 2003 by ASME
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References

Albrecht,  T., and Sai,  F., 1999, “Load/Unload Technology for Disk Drives,” IEEE Trans. Magn., 35(2), pp. 857–862.
Hu,  Y., Jones,  P. M., and Li,  K., 1999, “Air Bearing Dynamics of Sub-Ambient Pressure Sliders During Dynamic Unload,” ASME J. Tribol., 121(3), pp. 553–559.
Peng,  J. P., 1999, “Theoretical Prediction of Ramp Loading/Unloading Process in Hard Disk Drives,” ASME J. Tribol., 121(3), pp. 568–574.
Zeng,  Q. H., and Bogy,  D. B., 2000, “A Simplified 4-DOF Suspension Model for Dynamic Load/Unload Simulation and its Application,” ASME J. Tribol., 122(1), pp. 274–279.
Zeng,  Q. H., and Bogy,  D. B., 1999, “Slider Air Bearing Designs for Load/Unload Applications,” IEEE Trans. Magn., 35(2), pp. 746–751.
Zeng,  Q. H., and Bogy,  D. B., 2000, “Effects of Certain Design Parameters on Load/Unload Performance,” IEEE Trans. Magn., 36(1), pp. 140–147.
Bogy,  D. B., and Zeng,  Q. H., 1999, “Effects of Suspension Limiters on the Dynamic Load/Unload Process: Numerical Simulation,” IEEE Trans. Magn., 35(5), pp. 2490–2492.
Newmark,  N. M., 1959, “A Method of Computation for Structural Dynamics,” ASCE J. of Eng. Mech. Div., 85, pp. 67–94.
Cook, R., 1981, Concepts and Applications of Finite Element Analysis, Wiley, New York.
Benson,  R. C., and Talke,  F. E., 1987, “The Transition between Sliding and Flying of a Magnetic Recording Slider,” IEEE Trans. Magn., 23(5), pp. 3441–3443.
Fukui,  S., and Kaneko,  R., 1988, “Analysis of Flying Characteristics of Magnetic Heads with Ultra-Thin Spacings Based on the Boltzmann Equation,” IEEE Trans. Magn., 24(6), pp. 2751–2753.
Frank, T., Neidhart, W., and Talke F. E., 2001, “Optimization of a Hard Disk Drive Using Finite Element Analysis,” presented at ASME/STLE Meeting, Seattle, Washington, October, 2000.

Figures

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Load/unload drive (top view)
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(a) Beam elements; and (b) complete FEM model
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Airbearing forces and ramp force during loading
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Minimum spacing, pitch angle, and roll angle during loading
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Airbearing forces during unloading for 20 mm/s and 160 mm/s
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Minimum spacing and pitch angle during unloading for 20 mm/s and 160 mm/s

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