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Study of internal friction of wire rope in terms of differential geometry

Research Project

Project/Area Number 26420081
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Design engineering/Machine functional elements/Tribology
Research InstitutionOita University

Principal Investigator

IMADO Keiji  大分大学, 工学部, 教授 (80160050)

Project Period (FY) 2014-04-01 – 2017-03-31
Project Status Completed (Fiscal Year 2016)
Budget Amount *help
¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000)
Fiscal Year 2016: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
Keywordsワイヤロ-プ / 微分幾何 / 内部摩擦 / 摩擦 / 微分幾何学 / 接触螺旋 / 素線断面 / 接線ベクトル / 主法線ベクトル / 近似楕円 / 回転マトリクス / ねじり振子
Outline of Final Research Achievements

An amplitude of damped torsional vibration due to an internal friction of a wire rope decreases from an arithmetic series like damping to an exponential damping according to the magnitude of an amplitude. Torsion spring constant and frictional torque are proportional to the tension of wire rope.
Simple approximate expression for a cross sectional profile of wire was derived by modifying an elliptical approximate method. The approximate expression used a simple base function so as to deform it like an exact cross section by using four constants. The cross sections obtained in this modified ellipse method corresponded well to the exact cross sections. A contact helix equation was also derived. Some basic properties of the contact helix were examined by using the contact helix equation obtained.

Report

(4 results)
  • 2016 Annual Research Report   Final Research Report ( PDF )
  • 2015 Research-status Report
  • 2014 Research-status Report
  • Research Products

    (9 results)

All 2016 2015 2014

All Journal Article (1 results) (of which Peer Reviewed: 1 results,  Open Access: 1 results) Presentation (8 results) (of which Int'l Joint Research: 3 results)

  • [Journal Article] Novel coupling applicable in off-centered condition2016

    • Author(s)
      Keiji IMADO, Kiyoshi TERADA
    • Journal Title

      Bulletin of the JSME vol.3 No.1, (2016)pp.1-9.

      Volume: 1 Pages: 1-9

    • NAID

      130005126166

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access
  • [Presentation] ワイヤロ-プの接触螺旋に関する基礎的研究2016

    • Author(s)
      今戸啓二
    • Organizer
      トライボロジ-会議 2016 秋 新潟
    • Place of Presentation
      新潟市
    • Year and Date
      2016-10-12
    • Related Report
      2016 Annual Research Report
  • [Presentation] Approximate expression for cross sectional profile of wire and contact helix equation for study of internal friction of wire rope2016

    • Author(s)
      Keiji Imado
    • Organizer
      NordTrib 2016
    • Place of Presentation
      ハメ-ンリンナ,フィンランド
    • Year and Date
      2016-06-14
    • Related Report
      2016 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ワイヤロ-プの内部摩擦に関する基礎的研究2016

    • Author(s)
      今戸啓二
    • Organizer
      トライボロジ-会議 2016 春 東京
    • Place of Presentation
      東京
    • Year and Date
      2016-05-23
    • Related Report
      2016 Annual Research Report
  • [Presentation] Development of Novel Coupling of Looped Belt Type2015

    • Author(s)
      Keiji Imado, Kiyoshi Terada
    • Organizer
      ITC TOKYO 2015
    • Place of Presentation
      東京理科大学葛飾キャンパス (東京都葛飾区新宿6-3-1)
    • Year and Date
      2015-09-16
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] Novel Joint Applicable in Off-Centered Condition2015

    • Author(s)
      Keiji Imado, Kiyoshi Terada, Thomas Harran
    • Organizer
      ICMDT2014(The 6th International Conference on Manufacturing, Machine Design and Tribology, Okinawa, Japan)
    • Place of Presentation
      沖縄コンベンションセンター (沖縄県 宜野湾市真志喜 4-3-1)
    • Year and Date
      2015-04-22
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research
  • [Presentation] ねじり振り子を利用したワイヤロープの内部摩擦に関する研究2015

    • Author(s)
      峯尾仰生
    • Organizer
      日本機械学会 九州支部講演会
    • Place of Presentation
      福岡大学工学部・福岡市
    • Year and Date
      2015-03-13
    • Related Report
      2014 Research-status Report
  • [Presentation] ねじり振り子を利用したワイヤ-ロ-プの内部摩擦の評価2014

    • Author(s)
      今戸啓二
    • Organizer
      トライボロジ-会議 2014 秋 盛岡
    • Place of Presentation
      アイーナ いわて県民情報交流センター・盛岡市
    • Year and Date
      2014-11-05 – 2014-11-07
    • Related Report
      2014 Research-status Report
  • [Presentation] 縒り合せた素線間の摩擦に関する基礎的研究2014

    • Author(s)
      峯尾仰生
    • Organizer
      トライボロジ-会議 2014 春 東京
    • Place of Presentation
      国立オリンピック記念青少年総合センター・東京
    • Year and Date
      2014-05-19 – 2014-05-21
    • Related Report
      2014 Research-status Report

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Published: 2014-04-04   Modified: 2018-03-22  

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