Wheel-Rail Adhesion Test Based on Full Scale Roller Rig

The braking on trains is mainly generated by adhesion between wheels and rails. Sliding and lock on wheels can be caused by excessive braking torque. If the braking force is insufficient, there will be problems such as excessive braking distance and low braking efficiency. Therefore, it is necessary to study the adhesion under braking conditions. This paper relies on full scale brake system comprehensive test rig to test the wheel-rail adhesion characteristics. Emphasis is placed on the effects of different speeds and axle loads on the adhesion under water conditions. The results show that with the increase of speed, the wheel-rail adhesion coefficient will show a downward trend. Adhesion coefficient increases first and then decreases with the increase of slip ratio. The slip ratio corresponding to the maximum adhesion coefficient is below 1%, and the slip ratio corresponding to the peak value of the adhesion coefficient decreases with the increase of speed. In addition, under the condition of water medium, the wheel-rail adhesion coefficient decreases with the increase of axle load.

Language

  • English

Media Info

  • Media Type: Web
  • Features: References;
  • Pagination: pp 564-572
  • Monograph Title: Resilience and Sustainable Transportation Systems

Subject/Index Terms

Filing Info

  • Accession Number: 01745432
  • Record Type: Publication
  • ISBN: 9780784482902
  • Files: TRIS, ASCE
  • Created Date: Jun 29 2020 3:02PM