Effects of service conditions on the as-manufactured residual stress distribution in commuter car wheels

Details

• Creators:
  Gordon, Jeff ; Perlman, A. Benjamin
• Corporate Creators:
  John A. Volpe National Transportation Systems Center (U.S.) ; Tufts University
• Subject/TRT Terms:
  • Railroads
  • Commuter cars
  • Car wheels (Railroads)
  • Residual stress
  • Cracking
  • Thermal stresses
  • Heat
  • Stresses
  • Railroad
  • Commuter
  More +
• Resource Type:
  Proceedings
• Geographical Coverage:
  United States
• Corporate Publisher:
  United States. Department of Transportation. Federal Railroad Administration
• Abstract:
  The effects of simulated service conditions on the as-manufactured residual stress ; distribution in commuter car wheels are investigated. The residual stresses, those ; stresses which remain after all applied loads are removed, can encourage the formation ; and growth of fatigue cracks. The subject wheels are quenched following initial ; forging to increase hardness and induce residual compression in the rim. These ; features combine to render to the wheel more resistant to fatigue crack formation and to ; reduce the risk of failure in service. However, the as-manufactured net rim ; compressive residual stress may be reversed to tension when subjected to service ; loading, which includes tread braking, in railroad commuter operations. Tensile ; stresses at the wheel tread create an environment conducive to the formation of surface ; cracks that may threaten the safety of train operations.
  More +
• Format:
  PDF
• Download URL:
  https://rosap.ntl.bts.gov/view/dot/8996/dot_8996_DS1.pdf
• File Type:
  [PDF - 137.88 KB]
• Collection(s):
  Volpe Center ; Federal Railroad Administration
• Main Document Checksum:
  urn:sha-512:3937c51226a3af643e95b78af08fdc25138ca4ed378659fe03aa1908602e6d7a13924cd3154e76a266c04287b1772110de2a39dda5c66ab9c52d6eb5f8b4bb9d