ANALYSIS OF THERMAL STRESSES AND RESIDUAL STRESS CHANGES IN RAILROAD WHEELS CAUSED BY SEVERE DRAG BRAKING

A finite-element computer program, which takes into consideration nonlinear material behaviour after the yield point has been exceeded, has used to analyze the thermal stresses in railroad freight car wheels subjected to severe drag brake heating. The analysis has been used with typical wheel material properties and wheel configurations to determine the thermal stress field and the extent of regions in the wheel where the yield point is exceeded. The resulting changes in the residual stress field after the wheel has cooled to ambient temperature have also been calculated. It is shown that severe drag braking can lead to the development of residual circumferential tensile stresses in the rim and radial compressive stresses in the plate near both the hub and rim fillets.

  • Supplemental Notes:
    • This paper was contributed by the Rail Transportation Division of the ASME for presentation at the Winter Annual Meeting, Houston, Texas, November 30-December 4, 1975.
  • Corporate Authors:

    American Society of Mechanical Engineers

    Two Park Avenue
    New York, NY  United States  10016-5990
  • Authors:
    • Johnson, M R
    • Welch, R E
    • Yeung, K S
  • Publication Date: 1975-7

Media Info

  • Features: Figures;
  • Pagination: 6 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00128633
  • Record Type: Publication
  • Source Agency: American Society of Mechanical Engineers
  • Report/Paper Numbers: 75-WA/RT-3
  • Files: TRIS
  • Created Date: Jan 14 1976 12:00AM