The development of squat defects under high axle load operations

The development of rail squat defects has been a major concern, particularly in passenger Systems operating at relatively low axle loads, because of the potential for rail failures. However, similar defects have also developed under the high axle load operations in the Hunter Valley Region of the Rail Infrastructure Corporation. This study has examined squat defects, and has shown that their primary causes are: the microslip that occurs within the wheel/rail contact patch, particularly at the higher traction and creep levels associated with locomotives and the wheelsetlbogie hunting and the associated high lateral creep forces. The findings have led to the implementation of a range of preventative measures, which have included changes to the rail grinding procedures, rail and wheel profiles, and lubrication practices.

Media Info

  • Pagination: 10p. ; PDF
  • Monograph Title: Cost efficient railways through engineering: CORE 2002: conference on railway engineering, November 10-13 2002, Wollongong, New South Wales, Australia

Subject/Index Terms

Filing Info

  • Accession Number: 01532037
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Jul 29 2014 11:52AM