DETERMINATION OF THE CHANGE IN THE VALUE OF THE TOTAL FORCE IN THE TRANSVERSE DIRECTION DEPENDING ON THE RIGIDITY OF THE INTER-MEDIATE RAIL FASTENING

Abstract

In the course of the work, calculations were carried out to determine the magnitude of the total forces in the transverse direction, depending on the magnitude of the vertical and horizontal stiffness of the intermediate rail fasteners within the circular curve. The calculation and analysis were performed using the Universal Mechanism software package. In particular, the UM Simulation module was used. As a result of computer modeling, the dependence of the change in transverse forces on the stiffness of the fasteners was determined. Three different stiffness values were adopted for the bonding of APC-4, of which two were boundary values, i.e. maximum and minimum. During the analysis of the results, it was revealed that the value of transverse forces decreases with increasing stiffness of rail fasteners, and increases again when a certain stiffness is reached. It is determined that the use of rail fasteners of minimum and maximum rigidity is ineffective in order to avoid increased wear on the elements of both the upper structure of the track and rolling stock. The optimal stiffness value was selected, at which the total forces in the transverse direction are minimal. It was 100 Mpa in the vertical direction and 130 Mpa in the horizontal direction. The data was presented as graphical dependencies. The result of the analysis makes it possible to more accurately study the interaction of the wheel-rail system when moving a wagon within a curved section of track and are of practical importance in the design and creation of rail fasteners.Keywords: intermediate rail fasteners, total forces in the transverse direction, the nature of movement of the rolling stock.