Modeling the dynamic behavior of the upper structure of the railway track

摘要

The present work is devoted to modeling the behavior of railway track under dynamic load of wheel pair in view of elastic, viscoelastic and elastic-plastic properties of the area of interaction between two solids and elastic anisotropic properties of the subgrade, which differ in three main areas: along the rails along the sleepers and vertically downwards. The wave equation railway tracks suggest that the deformation and the permanent way and the mound itself is the field of interaction of bodies takes place in view of the spread of a finite speed of the wave surfaces. The solution methods used methods of asymptotic expansions in the time and space coordinate, the method of matching the expansions obtained for short times in the contact zone and outside it.