SIMULATION THE VIBRATIONS OF RAILWAY STRUCTURES BY THE GRID-CHARACTERISTIC METHOD

Abstract

The aim of the study is to apply the grid-characteristic method on structured grids in various problems related to railway traffic safety; obtaining the results of full wave modeling using this method and analyzing them for a better understanding of the physical processes occurring in conditions of heavy and high-speed traffic on various sections of the track. The problem is to consider the traffic on a ballast and non-ballast bridge desk. In the course of computer simulation, various wave fields and dynamic distributions of the pressure and components of the Cauchy stress tensor were obtained during the traffic. An estimate of the calculation time during which the propagation of wave processes occurs in various bridge structures was made. The results obtained give an idea of wave phenomena during the traffic in the area of bridges and along the railway track as a whole.