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TECHNICAL PAPERS

Dynamic Characteristics of an In-Contact Head Slider Considering Meniscus Force: Part 3—Wear Durability and Optimization of Surface Energy of Liquid Lubricant Under Perfect Contact Condition

[+] Author and Article Information
Hiroshige Matsuoka, Shigehisa Fukui

Department of Applied Mathematics and Physics, Faculty of Engineering, Tottori University, Koyama, Tottori, 680-8552, Japan

Takahisa Kato

Institute of Mechanical Systems Engineering, AIST Tsukuba EAST, 1-2-1 Namiki, Tsukuba, Ibaraki, 305-8564, Japan

J. Tribol 124(4), 801-810 (Sep 24, 2002) (10 pages) doi:10.1115/1.1484112 History: Received May 04, 2001; Revised April 09, 2002; Online September 24, 2002
Copyright © 2002 by ASME
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References

Figures

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Head/disk interface systems
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Tri-pad slider with spherical pads
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Three-dimensional model of contact slider/disk interface system
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A model of bouncing (z) direction
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A model of pitching (θ) direction
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A model of rolling (φ) direction
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Four regimes of head-lubricant-disk interface
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Displacement of pad 1 and disk surface: (a) f=75 kHz; (b) f=128 kHz; and (c) f=131 kHz.
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Contact pressure of pad 1: (a) f=75 kHz; (b) f=128 kHz; and (c) f=131 kHz.
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Maximum bouncing height and maximum contact pressure: (a) maximum bouncing height of pad 1; and (b) maximum contact pressure of pad 1.
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Design condition of surface energy of liquid lubricant for perfect contact condition and optimum surface energy of lubricant
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Effect of the initial phases of the surface undulation on the critical frequency. The phases of the pads 2 and 3 mean the relative shift from the pad 1. The black bar shows the phases considered in this study.
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Result of 1-DOF analysis for critical frequencies fcb and fcp, showing the optimum surface energy which has close value to one obtained by 3-DOF simulation (cf. Fig. 13).
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Optimum surface energy γopt and critical frequency at the optimum surface energy fc opt, varying radius of contacting pad R
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Behavior of Optimum surface energy γopt and critical frequency at the optimum surface energy fc opt, by several design parameters, shown schematically

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