Author(s): D. Sun, Z. Zhuang, C. Li and W. Wang
A 60AT unsymmetrical section railroad rail is a new material developed for
using at the bifurcation of the railway.
The fatigue experiments and numerical
simulations have been carried out and presented in this paper to estimate the
service life of the rail.
This unsymmetrical geometry section results to complex
in the analysis and determination of the rail service life.
The experimental results
show that the fatigue cracks grow from the short flange at the bottom of the
section but the head as the symmetric section rail.
The simulation results of
Mises stress have given a stress ratio 2.91 between short and long flanges at the
bottom, which proves the lower service life at the short flange.
In addition, the
symmetrical section 5OAT and 60AT rails have also been tested to estimate the
service life and the comparison have been made for the res...
Size: 795 kb
Paper DOI: 10.2495/DM000321
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