P-HDI-05 MOLECULAR GAS-FILM LUBRICATION ANALYSES OF A SLIDER OVER A DISK WITH GROOVES : STATIC AND DYNAMIC FLYING CHARACTERISTICS OF A 3-DOF SLIDER(Head/Disk Interface and Tribology,Technical Program of Poster Session)
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概要
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Recently, the space between the flying head slider and the disk has been reduced to 10nm or less. Consequently, recording media with grooves such as discrete track media (DTM) and bit-patterned media (BPM), are considered to be some of the most promising media for achieving ultrahigh track densities. Thus, it is becoming increasingly important to analyze the static and dynamic characteristics of flying head sliders over DTM/BPM media using the molecular gas-film lubrication (MGL) equation. In this paper, we first use the perturbation method in the frequency domain to obtain not only the stiffness and damping produced by the air film but also the negative stiffness caused by the attractive van der Waals (vdW) force. The perturbation method was applied to a slider with 3 degrees-of-freedom (3-DOF) over an asymmetric groove-slider configuration, which caused a rolling motion in addition to translational and pitching motions. The dependence of the dynamic characteristics such as spacing fluctuations on the groove depth and the frequency were numerically obtained.
- 2009-06-17
著者
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SATO Atsushi
Department of Planning for Drug Development and Clinical Evaluation, Tohoku University Graduate Scho
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MATSUOKA HIROSHIGE
Department of Earth and Planetary Sciences, Graduate School of Science, Kyoto University
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Fukui Shigehisa
Department of Mechanical and Aerospace Engineering, Graduate School of Engineering, Tottori Universi
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Fukui Shigehisa
Department Of Mechanical And Aerospace Engineering Graduate School Of Engineering Tottori University
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Fukui Shigehisa
Department Of Applied Mathematics And Physics Faculty Of Engineering Tottori University
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Matsuoka Hiroshige
Department Of Mechanical And Aerospace Engineering Graduate School Of Engineering Tottori University
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Matsuoka Hiroshige
Department Of Applied Mathematics And Physics Faculty Of Engineering Tottori University
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Sato Atsushi
Department Of Applied Chemistry Chubu University
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Sato Atsushi
Department Of Mechanical And Aerospace Engineering Graduate School Of Engineering Tottori University
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