Effect of Nonlinear Parameters on Stresses in Railroad Tracks

A nonlinear formulation is presented for the analysis of railroad tracks. The finite element discretization is used for a rail element which includes all the deformation modes of the rail. The stiffness of the fasteners, ties, and roadbed is included by a set of springs. A parametric study is carried out to examine the effect of the nonlinear deformations and degradation on stresses and deformations.

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