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Energy saving achieved by application of top of rail (TOR) friction modifier (FM) in heavy haul are modeled, and the effects of curve radius and rail profile on the energy saving are discussed. A vehicle model for a C70 freight car running on the track of a heavy haul line was established. The coefficient of friction and Kalker coefficient were adjusted to simulate the creepage/force relationship...
A finite element model with the implementation of an advanced cyclic plasticity theory was used to study the three-dimensional elastic–plastic rolling contact stresses of wheel and rail. Three-dimensional rolling contact was simulated by multiple translations of the normal pressure and tangential tractions across the rail surface. The contact area, normal contact pressure and tangential tractions...
A finite element method (FEM) is used to study thermal-elastic–plastic deformation and residual stress after wheel sliding on a rail. The consideration of sliding contact between the wheel and the rail is restricted to a two dimensional contact problem. The repeated sliding contact process is simulated by translating the normal contact pressure and the tangential traction across the rail surface....
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