Influence of Wheel Materials on Thermal Load of Braking
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Date
2014-08
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Addis Ababa University
Abstract
This paper will study the influence of wheel materials on thermal loads as a result of
block braking for stopping the train. Transient thermal analyses of 3D model of
railway wheel for different velocities are performed using ANSYS v12.1 workbench.
The analysis is done for two wheels having different material compositions (that is
bainite steel wheel-new material and CL60 which is going to be used by Ethiopian
national railway vehicle). Using the thermal output as input for the transient structural
analysis different stresses concentrations are observed. The results obtained for the
two wheels show that, wheel 2 (Bainitic) has excellent strength, toughness and good
resistance to thermal damage due to better hardness. Therefore, Bainite steel can be
applied to wheels in the railway systems.
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Keywords
Wheel Materials, Thermal Load, Braking