Three-Dimensional Residual Stress Effects on the Fatigue Crack Initiation in Rails

[+] Author and Article Information
Chau-Cho Yu, L. M. Keer

Department of Civil Engineering, Northwestern University, Evanston, IL 60208

R. K. Steele

Association of American Railroads

J. Tribol 119(4), 660-666 (Oct 01, 1997) (7 pages) doi:10.1115/1.2833866 History: Received November 29, 1995; Revised July 10, 1996; Online January 24, 2008


A rail is simulated as an elastic-plastic kinematic hardening steel having a T-shaped cross section and finite length in the rolling direction. The direct analysis method and the finite element method are combined to solve for the steady-state residual stress/strains and cyclic plastic strain amplitudes. In the present analysis, some special loading cases are investigated. Results show that tensile residual stresses occur deep in a rail head over a large area of the substrate. These phenomena, which are observed in rail steel after service, cannot be deduced from a half plane or half space analysis.

Copyright © 1997 by The American Society of Mechanical Engineers
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