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Pretty much everybody now agrees that the model of rail privatisation imposed on the industry by the Conservatives does not work.
Open image in new window Fig. 3 Finite element model of rail crack.
A three-dimensional finite element model of rail at welds is then built up to investigate the plastic deformation of rail.
Particularly for this model of rail, the bending and the longitudinal displacement are coupled due to the rail pad and a complex model of the rail pad is adopted.
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Through these analyses the influences of the modeling of rail and rail support on the unstable speed range are examined.
This study deals with the modeling of rail vehicles' behavior when traveling in curves of short radius.
The recent major work in automata modeling of rail interlocking systems has been done in Turkish National Railway Signalization Project (Söylemez et al. 2011; Turk et al. 2011; Dincel and Kurtulan 2012) which explain in detail techniques in how to model rail interlocking system modules, simultaneously pointing out the pitfall of state explosion for large models.
Different models of rails for the high frequency range are compared.
Easier to use and more broad ranged, softwares such as 'SIMUL8' and 'Arena' have also be used for less complex modelling of rails.
To this end, a multi-body model of the rail vehicle is defined including track flexibility effects on three levels of detail: a perfectly rigid pair of rails, a sectional track model and a three-dimensional finite element track model.
On the basis of adapting the generalized FE model of the rail joint to simulating the CE process, a comparison between the cases with and without CE of rail-end-bolt holes has been made.
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