3D Modeling and Nonlinear Analysis Stability of CWR Tracks

Rail welding and forming continuous welded track provides many benefits in terms of exploitation and maintenance of railway lines, however there remains the problem of ensuring stability and prevent lateral buckling of the track. This problem is particularly expressed in areas with large temperature differences in the summer and winter period (minimum and maximum temperature) and tracks the maximum adjusted topographical conditions (applied to the minimum curvature radius and maximum longitudinal slopes). In order to solve this problem in the past have made numerous researches and developed many of the analytical method for the analysis. Many of them due to the large number of parameters are too complicated and are not applicable in engineering practice so tended their simplification, usually in a way that the calculations are not taken into consideration material and geometric nonlinearity. To analyze the stability of the CWR track in past several years used numerical models based on the finite element method, and have been developed and various software packages to analyze the stability of the track. Advantages of this method of analysis of the stability of the track-and CWR are able to make the models corresponding to the actual state of the track and the possibility of nonlinear analysis. Also, for making models can be used commercial FE software for nonlinear structural analysis, as will be shown in this paper.