Influence of unilateral low adhesion on transient wheel-rail rolling contact and wheel damages

A time-domain finite element model is developed to study the transient rolling contact of a driving wheelset over a curved track with Low Adhesion Zones (LAZs) shorter than 1.0 m. LAZs on one rail, i.e., unilateral LAZs occurring more likely, is treated for a speed up to 500 km/h. Structural vibrations of wheelset are analyzed to explain the transient contact forces, creepages and the resulting irregular wear. LAZs on high rails are found more detrimental than those on low rails. The results explain the occurrence of flats and rolling contact fatigue in bad weather, although significant wheel idling is absent.

Media Info

  • Pagination: 11p.; PDF
  • Monograph Title: 12th International conference on contact mechanics and wear of rail/wheel systems (CM2022): advancing the science and practice of the wheel/rail interface to improve railway operation efficiency

Subject/Index Terms

Filing Info

  • Accession Number: 01879035
  • Record Type: Publication
  • Source Agency: ARRB Group Limited
  • Files: ATRI
  • Created Date: Apr 10 2023 4:54PM