Effect of Gap Clearances in Automatic Coupling Devices on Longitudinal Forces in Intercar Connections of Homogeneous Train

Abstract

A computer simulation of transient processes is performed that occur in the train intercar connections at starting from standstill, transition to idling and electrodynamic braking by the locomotive on a straight horizontal section of the railway track. The effect of gap clearances in the automatic coupling devices of homogeneous trains on the maximum intercar forces and the nature of their actions is studied. The diagrams of the maximum forces in the train at transient processes and their distribution along the train length are presented. It is shown that increase of the gap clearances leads to an increase in the values of impact forces and their action time. The necessity of a smooth change of the traction and braking forces at train operation allowing to reduce the longitudinal forces to values that ensure the traffic safety is demonstrated.

Keywords

• longitudinal force
• gap clearances in automatic coupling devices
• homogeneous train
• traction
• braking