Investigation of Heat Treating of Railroad Wheels and its Effect on Braking Using Finite Element Analysis

This paper studies the heat treatment process of a 36” freight car wheel manufactured by Griffin Wheel Company. Ideal and non-ideal heat treatment processing and the effect on the residual stress after on-tread braking are evaluated. Two models are developed to simulate both the heat treatment process and on-tread braking using ANSYS. The residual stress due to the heat treatment is evaluated and applied as prestress in the braking simulation model. Both nonlinear thermal and structural simulations are conducted.

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