A finite-element computer program, which takes into consideration nonlinear material behavior after the yield point has been exceeded, has been 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.
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February 1977
This article was originally published in
Journal of Engineering for Industry
Research Papers
Analysis of Thermal Stresses and Residual Stress Changes in Railroad Wheels Caused by Severe Drag Braking
M. R. Johnson,
M. R. Johnson
Engineering Mechanics Division, IIT Research Institute, Chicago, Ill.
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R. E. Welch,
R. E. Welch
IIT Research Institute, Chicago, Ill.
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K. S. Yeung
K. S. Yeung
IIT Research Institute, Chicago, Ill.
Search for other works by this author on:
M. R. Johnson
Engineering Mechanics Division, IIT Research Institute, Chicago, Ill.
R. E. Welch
IIT Research Institute, Chicago, Ill.
K. S. Yeung
IIT Research Institute, Chicago, Ill.
J. Eng. Ind. Feb 1977, 99(1): 18-23
Published Online: February 1, 1977
Article history
Received:
July 31, 1975
Online:
July 15, 2010
Citation
Johnson, M. R., Welch, R. E., and Yeung, K. S. (February 1, 1977). "Analysis of Thermal Stresses and Residual Stress Changes in Railroad Wheels Caused by Severe Drag Braking." ASME. J. Eng. Ind. February 1977; 99(1): 18–23. https://doi.org/10.1115/1.3439136
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