Journal of the Korean Society for Precision Engineering (한국정밀공학회지)

Korean Society for Precision Engineering (한국정밀공학회)
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Analysis on the Running Stability of Rolling-stock according to Wheel Profile Wear

차륜답면형상 마모에 따른 차량 주행안정성 영향 분석

  • Hur, Hyun-Moo (Vehicle Dynamics & Propulsion System Research Department, KRRI) ;
  • You, Won-Hee (Vehicle Dynamics & Propulsion System Research Department, KRRI)
  • 허현무 (한국철도기술연구원 주행추진연구실) ;
  • 유원희 (한국철도기술연구원 주행추진연구실)
  • Received : 2011.02.21
  • Accepted : 2011.04.01
  • Published : 2011.05.01
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Abstract

To analyze the effect of wear of wheel profile on the running stability of rolling-stock, theoretical and experimental studies were conducted on the profiles used in conventional lines. In experiment using 1/5 scale model to verify the results of the theoretical analysis, the test results of the critical speed for worn wheel profile samples show similar trend. In case of the conical type wheel profile(Profile 40), the equivalent conicity is increased with flange wear. But in case of the arc type wheel profile(Profile 20h), the equivalent conicity is decreased with flange wear. And the critical speed of the bogie was inverse proportion to the equivalent conicity. It is shown that the variation of the critical speed with the wheel wear could be changed according to the design concept and wear pattern of wheel profile. Results of the theoretical and experimental studies are discussed here.

Keywords

References

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