Determination of Longitudinal Forces in the Cars Automatic Couplers at Train Electrodynamic Braking

During the research an analysis of forces which arise at the car automatic couplers in the course of electrodynamic braking of a train moving on the given railway profile has been performed. As the initial data dependences of the train velocity and the passed distance on time were taken. The obtained results demonstrate that at braking the maximal longitudinal forces in the automatic couplers are practically independent from the location of empty cars group along the train. The allowed compressive force value of 500 kN for empty cars is not exceeded on condition that they are located in the last third of the train length.