CALCULATION OF THE STRESS STATE OF A RAILWAY TRACK WITH UNSUPPORTED SLEEPERS USING THE GRID-CHARACTERISTIC METHOD

Damage to a railway track during high-speed movement of heavy freight trains in its various sections is modeled using the grid-characteristic method on structured grids. The separation of sleepers from the ballast (unsupported sleepers) is studied. As a result of the computer simulation, various wave patterns and patterns of dynamic distributions of the Cauchy stress tensor (pressure) components during train movement on the railway were obtained. The cracking process is described.