Analysis of Rolling Contact Fatigue Damage and Fatigue Life Comparison of Rail Due to Cyclic Axle Load
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Date
2014-09
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Publisher
AAU
Abstract
This paper presents the analysis of rolling contact fatigue damage due to cyclic axle load
between wheel/rail and fatigue life comparison between experimental and ANSYS
results. The purpose is to see the fatigue life of the rail and to protect it from failure. .For
this analysis a three-dimensional finite element model of the wheel/rail interaction is used
to investigate the effect of the applied contact loading force at the straight area of the
wheel tread and railhead surface. For the experimental part, fatigue test is conducted by
taking specimens from the rail material and the specimens are modeled by CATIA V5
and analysis the effect with ANSYS 12.0 by applying different loads for the comparison
of the fatigue life. Throughout the whole analysis, the Hertz contact theory assumptions
are basically considered. Form the wheel/rail fatigue life analysis the result found is see
the maximum life found by the applied load. The specimen numerical and experimental
result shows that the experimental analysis is more preferable and precise. The
application of this study is to identify and protect the rail from failure and to insure safety
of the passengers and minimize maintenance cost.
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Keywords
Rolling Contact, Cyclic Axle Load, Fatigue Analysis