Development of Nonlinear Analysis Model of CWR Track

Abstract

CWR(Continuous Welded Rail) has many advantages such as the reduction of maintenance costs, increase of service life of the track components and reduction of vibration and noise and so on. However, the stability problems such as the lateral buckling of CWR track has been occurred. Theoretical and experimental studies have been done in order to secure stability of CWR track for many years in the many country research institutes. In this study, analytical model was developed by using a commercial FE program to examine the stability of CWR track. Verification studies were conducted such as snap-through behavior, large deformation analysis and Euler-buckling analysis due to temperature. Also, to prove the validity of the developed model, comparison study was done with existing verified 3D CWR buckling analysis results.