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

Tribological Characteristics of Electric Sliding Contacts With Oil-Impregnated Porous Materials

Research Project

Project/Area Number 20560128
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Design engineering/Machine functional elements/Tribology
Research InstitutionNagaoka University of Technology

Principal Investigator

KANEKO Satoru  Nagaoka University of Technology, 工学部, 教授 (90161174)

Co-Investigator(Kenkyū-buntansha) TAURA Hiroo  長岡技術科学大学, 工学部, 助教 (20334691)
Project Period (FY) 2008 – 2010
Project Status Completed (Fiscal Year 2010)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000)
Fiscal Year 2008: ¥3,510,000 (Direct Cost: ¥2,700,000、Indirect Cost: ¥810,000)
Keywords多孔質含油材料 / 電気しゅう動接点 / 透過率 / 摩擦特性 / 通電特性 / 無次元軸受特性数 / 摩擦係数 / 分離度 / ライダ幅
Research Abstract

The electric sliding contacts are widely used in electrical components such as for automobiles. The purpose of the present study is to improve the performance characteristics of the electric sliding contacts and to extend their lifetime by applying the porous materials used in conventional sintered metal bearings to the surface materials of the sliding contacts.
The effects of the permeability of porous materials on the electrical conductivity and the frictional characteristics have been investigated theoretically and experimentally. The sliding contacts used in the present study consist of a nonporous rider (stator) having convex surface and a rotating porous disk (slider). The experimental analysis is conducted with a pin-on-disk friction tester to measure the frictional force and the contact voltage between the sliding contacts. The numerical analysis yields the oil-film pressure distributions, the oil-film force and the frictional force at the contact area between the rider and the … More rotating disk. These characteristics are calculated by simultaneously solving the modified Reynolds equation, which includes the filter term and the effect of tangential velocity slip, and the Laplace equation derived from Darcy's law.
The results show that the numerical and the experimental results agree qualitatively. An increase in the permeability of the porous materials extends the operating conditions under the continuous metal contact to a higher value of the dimensionless bearing characteristic number S defined by ηU_0L/w_f (η : oil viscosity, U_0 : sliding speed, B : width of rider, w_f : applied load), and also decreases the frictional force at the maximum value of S where the rider could make electrical contacts with the disk surface. This suggests that the porous materials yield a lower frictional loss and a longer lifetime than the conventional nonporous sliding contacts.
Consequently, the oil-impregnated porous materials have superiority over the conventional nonporous ones as sliding contact materials from the viewpoint that the rider and the disk could operate under continuous metal contact condition with a lower frictional force for a wide range of S. Less

Report

(4 results)
  • 2010 Annual Research Report   Final Research Report ( PDF )
  • 2009 Annual Research Report
  • 2008 Annual Research Report
  • Research Products

    (6 results)

All 2011 2010 2009

All Presentation (6 results)

  • [Presentation] 多孔質含油材料を用いた電気しゅう動接点の潤滑特性に関する数値解析2011

    • Author(s)
      金子覚, 田浦裕生
    • Organizer
      日本機械学会北陸信越支部第48期総会・講演会
    • Place of Presentation
      信州大学繊維学部(長野県)
    • Year and Date
      2011-03-05
    • Related Report
      2010 Annual Research Report 2010 Final Research Report
  • [Presentation] 多孔質含油材料を用いた電気しゅう動接点への適用2010

    • Author(s)
      田浦裕生, 金子覚
    • Organizer
      日本機械学会第10回機素潤滑設計部門講演会
    • Place of Presentation
      月岡温泉(新潟県)
    • Year and Date
      2010-04-20
    • Related Report
      2010 Annual Research Report 2010 Final Research Report
  • [Presentation] 多孔質含油材料を用いた電気しゅう動接点の潤滑特性2010

    • Author(s)
      金子覚, 田浦裕生
    • Organizer
      日本機械学会北陸信越支部第47期総会・講演会
    • Place of Presentation
      新潟大学工学部(新潟県)
    • Year and Date
      2010-03-10
    • Related Report
      2010 Final Research Report
  • [Presentation] 多孔質含油材料を用いた電気しゅう動接点の潤滑特性2010

    • Author(s)
      金子覚
    • Organizer
      日本機械学会 北陸信越支部 第47期総会・講演会
    • Place of Presentation
      新潟大学工学部
    • Year and Date
      2010-03-10
    • Related Report
      2009 Annual Research Report
  • [Presentation] 多孔質含油材料の電気しゅう動接点への適用2009

    • Author(s)
      金子覚, 田浦裕生
    • Organizer
      日本機械学会北陸信越支部第46期総会・講演会
    • Place of Presentation
      富山大学工学部(富山県)
    • Year and Date
      2009-03-07
    • Related Report
      2010 Final Research Report
  • [Presentation] 多孔質含油材料の電気しゅう動接点への適用2009

    • Author(s)
      金子 覚
    • Organizer
      日本機械学会 北陸信越支部 第46期総会・講演会
    • Place of Presentation
      富山大学工学部
    • Year and Date
      2009-03-07
    • Related Report
      2008 Annual Research Report

URL: 

Published: 2008-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi