The various vehicle-track coupling system dynamic analysis models introduced in the previous chapters all have the problem of the influence of the truncated boundary of the track structure on the solution. In this chapter, the slab track element model and the associated algorithm in a moving frame of reference for dynamic analysis of the vehicle-track coupling system are presented. Three-layer continuous beam model for the slab track is developed, and the mass, damping and stiffness matrices of the slab track element in a moving frame of reference are deduced. A whole vehicle is taken into account as a vehicle element with 26 DOFs. This method can effectively avoid the influence of the truncated boundary on the calculation results, and improve the calculation accuracy and efficiency. The main advantage of the approach is that, unlike in the FEM, the moving vehicle always acts at the same point in the numerical model, thereby eliminating the need for keeping track of the contact point with respect to individual elements. In addition, the moving vehicle will never run out of the truncated model.
Dynamic Analysis of the Vehicle–Track Coupling System with Finite Elements in a Moving Frame of Reference
Advances High-speed Rail
2021-12-16
30 pages
Article/Chapter (Book)
Electronic Resource
English
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