| Project/Area Number |
12555041
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
設計工学・機械要素・トライボロジー
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| Research Institution | Tottori University |
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Principal Investigator |
FUKUI Shigehisa Tottori University, Faculty of Engineering, Professor, 工学部, 教授 (40273883)
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| Co-Investigator(Kenkyū-buntansha) |
KANEKO Reizo Wakayama University, Faculty of Systems Engineering, Professor, システム工学部, 教授 (20283955)
KATO Takahisa National Institute of Advanced Industrial Science and Technology (AIST), Institute of Mechanical Systems Engineering, Principal Research Scientist, 産業技術総合研究所・機械システム研究部門, 統括研究員
MATSUOKA Hiroshige Tottori University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (10314569)
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| Project Period (FY) |
2000 – 2002
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| Project Status |
Completed (Fiscal Year 2002)
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| Budget Amount *help |
¥10,500,000 (Direct Cost: ¥10,500,000)
Fiscal Year 2002: ¥700,000 (Direct Cost: ¥700,000)
Fiscal Year 2001: ¥1,000,000 (Direct Cost: ¥1,000,000)
Fiscal Year 2000: ¥8,800,000 (Direct Cost: ¥8,800,000)
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| Keywords | Microtribology / Molecular Gas-film Lubrication / Direct Simulation Monte Carlo / Flying Head Slider / Molecular Liquid-film Lubrication / Magnetic Storage Devices / Nanotechnology / Meniscus Force / モンテカルロ直接シミュレーション(DSMC) / メンスカス力 |
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| Research Abstract |
In this year, three research are planned and executed; 1) for the understanding of the near contact head characteristics considering both Molecular Gas-film Lubrication (MGL) and Molecular Liquid-film Lubrication (MLL) effects, surface deformations of the liquid under line air pressure or pressures caused by slider bearings were calculated using long-wave theory, which gives time-dependent deformations of very thin film layer considering surface tension and van der Waals forces, 2) the generalized formula of the van der Waals force was newly developed which can be applied to the general problems such as the HDI problems, and static and dynamic characteristics of the flying head sliders were analyzed including the van der Waals forces, 3) dynamic characteristics of liquid meniscus bridge, which shows the time dependent characteristics of contact angle and liquid curvatures observed by means of high speed video camera, were analyzed based on the assumption that i) the boundary positions are time-variable (VBP model) and ii) the contact angles are time-variable (VCA model), and the experimental results showed the tendency between analytical results of VBP model and VCA model.
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