Influence of resistance to motion of railway vehicles on the longitudinal trains dynamics

Abstract

Abstract. Longitudinal dynamics of trains is a subject that generates discussions and views on the parameters that interfere and influence both the size of the forces and their distribution in the train body. The paper is a study to determine the influence of resistances to motion on the longitudinal dynamic forces that develop in the body of the train in the braking process. For this, a train study model of ten identical vehicles, to which the locomotive may or may not be attached, is adopted. Initially, the simulation program for the non-locomotive model is run in two variants: with and without introducing additional resistances to motion, followed by the same simulations but with the locomotive introduced and a wagon removed, thus the number of vehicles remains the same for all the cases presented.

Determination of the thermal stress state for the composite brake pad of a wagon at operational loads

“…Other studies [15,16], aimed at introducing modern materials into the design of tribotechnical units, substantiate the effectiveness of their application in modern rolling stock; this makes it possible to increase the speed of movement, the axial load, the efficiency of the brake system, etc. But, at the same time, there are a number of problems associated with abnormal wear of brake pads in wagons that need to be solved.…”