• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Study of interactions between micro-dimples under fluid lubrication and its application for design of ultra-high performance fluid bearings

Research Project

Project/Area Number 21K03842
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Review Section Basic Section 18040:Machine elements and tribology-related
Research InstitutionKanto Gakuin University

Principal Investigator

Miyanaga Norifumi  関東学院大学, 理工学部, 教授 (00547060)

Co-Investigator(Kenkyū-buntansha) 富岡 淳  早稲田大学, 理工学術院, 教授 (40217526)
Project Period (FY) 2021-04-01 – 2024-03-31
Project Status Completed (Fiscal Year 2023)
Budget Amount *help
¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
Fiscal Year 2023: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2022: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2021: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Keywordsすべり軸受 / 流体潤滑 / ディンプル / キャビテーション / 流体軸受 / ディンプル軸受 / テクスチャ / スラスト軸受
Outline of Research at the Start

本研究では,(1)流体潤滑問題としてのテクスチャ表面の決定論的・統計論的な新しいモデリング,(2)テクスチャを有する流体軸受油膜の静・動特性評価,(3)テクスチャの最適化による,低摩擦,高負荷容量,高動剛性な流体軸受の開発,などに取組む.このことは,単に理想的なモデルで油膜力や剛性の大きなテクスチャ表面の一例を提示するだけではなく,個々のディンプルにおける流体潤滑特性のばらつきや相互作用を考慮した理論を構築し,それを流体軸受設計に応用することを意味し,産業応用を一層拡大し,持続可能社会に貢献することができる.

Outline of Final Research Achievements

In this study, we focused on the interaction between dimples on lubricant flow around dimples and hydrodynamic fluid lubrication characteristics, and investigated various possibilities to realize a fluid dynamic bearing with low friction, high load capacity, and high rigidity. In particular, we found that even on a textured surface with equally spaced dimples, cavitation bubbles are generated differently on each dimple, and this causes a significant change in the static characteristics. These findings mean that it is necessary to construct a theory that takes into account the variation and interaction of fluid lubrication characteristics at individual dimples and apply it to fluid dynamic bearing design, rather than simply presenting an ideal model with high oil film force and low friction conditions as only one example.

Academic Significance and Societal Importance of the Research Achievements

ディンプルや溝などをしゅう動面に施した,軸受やシールなどの機械要素は,それらのテクスチャの効果によって性能向上が期待されている.しかし,理論的背景が十分ではなく,個々の条件に応じた設計方法を明らかにすることは容易ではない.そのため,個々のディンプルにおける流体潤滑特性のばらつきや相互作用を考慮した理論を構築することが重要である.このことは,単に理想的な条件のみでなく,より現実的な条件を想定した実験と解析により得られた知見を流体軸受設計に応用することを意味し,産業応用を一層拡大することができる.

Report

(4 results)
  • 2023 Annual Research Report   Final Research Report ( PDF )
  • 2022 Research-status Report
  • 2021 Research-status Report
  • Research Products

    (15 results)

All 2024 2023 2022 2021

All Journal Article (4 results) (of which Peer Reviewed: 3 results,  Open Access: 1 results) Presentation (11 results) (of which Int'l Joint Research: 6 results)

  • [Journal Article] Estimations of Cavitation Pressures in Dimpled Seal-type Thrust Bearings2024

    • Author(s)
      三和 怜央、石井 亮太、宮永 宜典、辻森 淳、富岡 淳
    • Journal Title

      JOURNAL OF JAPAN SOCIETY FOR DESIGN ENGINEERING

      Volume: 59 Issue: 4 Pages: 169-182

    • DOI

      10.14953/jjsde.2023.2992

    • ISSN
      0919-2948, 2188-9023
    • Related Report
      2023 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Effect of Internal Structure of Circular Dimples on Hydrodynamic Lubrication Characteristics of Thrust Bearings2023

    • Author(s)
      Ishi Ryota、Miwa Reo、Miyanaga Norifumi、Tomioka Jun
    • Journal Title

      Tribology in Industry

      Volume: 45 Issue: 4 Pages: 634-642

    • DOI

      10.24874/ti.1504.06.23.09

    • Related Report
      2023 Annual Research Report
  • [Journal Article] Investigations of Lubrication Characteristics of Dimpled Seal-type Thrust Bearings by Experiments under Fixed Applied Load and Fixed Fluid Film Thickness Conditions2022

    • Author(s)
      三和 怜央、宮永 宜典、辻森 淳、富岡 淳
    • Journal Title

      JOURNAL OF JAPAN SOCIETY FOR DESIGN ENGINEERING

      Volume: 57 Issue: 12 Pages: 621-636

    • DOI

      10.14953/jjsde.2022.2967

    • ISSN
      0919-2948, 2188-9023
    • Related Report
      2022 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Appearance of Hysteresis Phenomena on Hydrodynamic Lubrication in a Seal-Type Thrust Bearing with Dimples2021

    • Author(s)
      Reo Miwa, Norifumi Miyanaga, Jun Tomioka
    • Journal Title

      Materials

      Volume: 14 Pages: 5222-5222

    • Related Report
      2021 Research-status Report
    • Peer Reviewed
  • [Presentation] Investigations of Static Characteristics of Dimpled Thrust Bearings with Considering Measured Cavitation Pressure2023

    • Author(s)
      Reo Miwa, Ryota Ishii, Norifumi Miyanaga, Atsushi Tsujimori, Jun Tomioka
    • Organizer
      9th International Tribology Conference (ITC2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effect of Internal Structure of Dimples on Lubrication Characteristics of Seal-Type Thrust Bearings2023

    • Author(s)
      Ryota Ishii, Reo Miwa, Norifumi Miyanaga, Atsushi Tsujimori, Jun Tomioka
    • Organizer
      9th International Tribology Conference (ITC2023)
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Measurement of fluid film pressures in thrust bearing with cylindical and spherical dimples2023

    • Author(s)
      Ryota ISHII, Rep MIWA, Norifumi MIYANAGA, Atsushi TSUJIMORI, Jun TOMIOKA
    • Organizer
      Leeds-Lyon Simposium on Tribology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Investigation of lubrication characteristics of seal-type dimpled thrust bearings with considering cavitation pressure2023

    • Author(s)
      Reo MIWA, Ryota ISHII, Norifumi MIYANAGA, Atsushi TSUJIMORI, Jun TOMIOKA
    • Organizer
      Leeds-Lyon Simposium on Tribology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 二重円環ディンプル付き平行平板軸受の潤滑特性の理論的および実験的検討2023

    • Author(s)
      富岡淳, 山崎裕太, 宮永宜典
    • Organizer
      日本機械学会茨城講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] DF 法を導入したディンプル付平行円板軸受の潤滑特性の理論解析2023

    • Author(s)
      富岡淳, 山岸祐太, 宮永宜典
    • Organizer
      日本設計工学会中国支部2023年度研究発表講演会
    • Related Report
      2023 Annual Research Report
  • [Presentation] EFFECT OF CROSS-SECTIONAL PROFILE OF CIRCULAR DIMPLES ON HYDRODYNAMIC LUBRICATION CHARACTERISTICS OF THRUST BEARINGS2023

    • Author(s)
      Ryota Ishii, Reo Miwa, Norifumi Miyanaga, Jun Tomioka
    • Organizer
      18th International Conference on Tribology
    • Related Report
      2023 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Effects of Diameter and Depth of Dimples on Lubrication Characteristics of Seal-type Thrust Bearings2023

    • Author(s)
      Reo Miwa, Norifumi Miyanaga, Atsushi, Tsujimori, Jun Tomioka
    • Organizer
      The 9th International Conference on Manufacturing, Machine Design and Tribology
    • Related Report
      2022 Research-status Report
    • Int'l Joint Research
  • [Presentation] 実験と数値解析との比較によるスラスト軸受のディンプル部で生じるキャビテーション圧 力の推定2023

    • Author(s)
      石井亮太, 三和怜央, 宮永宜典, 富岡 淳
    • Organizer
      日本設計工学会
    • Related Report
      2022 Research-status Report
  • [Presentation] シール型スラスト軸受におけるディンプルが 流体潤滑特性に及ぼす影響2021

    • Author(s)
      三和怜央 , 石井亮太 , 宮永宜典 , 富岡淳
    • Organizer
      トライボロジー会議2021 秋 松江
    • Related Report
      2021 Research-status Report
  • [Presentation] 平行円板スクイーズ軸受における油膜破断の検討2021

    • Author(s)
      富岡淳, 宮岡麟太郎, 三鍋諒, 宮永宜典
    • Organizer
      日本設計工学会 2021年度 秋季大会研究発表講演会
    • Related Report
      2021 Research-status Report

URL: 

Published: 2021-04-28   Modified: 2025-01-30  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi