Inelastic finite element analysis of the contribution of rail chill to braked tread surface fatigue

Mark Balzer, Huseyin Sehitoglu, Gerald J. Moyar

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A railroad wheel, heated by tread braking and in rolling contact with a rail, is subjected to complex stresses with every revolution. In addition to the stresses caused by the contact load, the transfer of heat across the contact patch from the hot wheel to the ambient temperature rail induces transient thermal stresses in the wheel tread. To investigate the significance of these thermal stresses, termed the rail chill effect, a finite element model of frictionless rolling contact was developed. The wheel tread was modeled as a plane strain portion of an elasto-plastic half space. Thermal and mechanical loads were translated across the model's free surface while displacement boundary conditions due to an elastic Hertzian contact analysis were imposed at the material boundaries of the mesh. Using temperature dependent material properties, we obtain results on the penetration of the temperature affected zone and stresses in the wheel.

Original languageEnglish (US)
Title of host publicationRail Transportation - 1992
PublisherPubl by ASME
Pages117-122
Number of pages6
ISBN (Print)0791811239
StatePublished - 1992
EventWinter Annual Meeting of the American Society of Mechanical Engineers - Anaheim, CA, USA
Duration: Nov 8 1992Nov 13 1992

Publication series

NameAmerican Society of Mechanical Engineers, Rail Transportation Division (Publication) RTD
Volume5

Other

OtherWinter Annual Meeting of the American Society of Mechanical Engineers
CityAnaheim, CA, USA
Period11/8/9211/13/92

ASJC Scopus subject areas

  • Mechanical Engineering
  • Transportation

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