A numerical model to predict train-induced vibrations is presented. The dynamic computation considers mutual interactions in vehicle/track coupled systems by means of a finite and discrete elements method. The rail defects and the case of out-of-round wheels are considered. The dynamic interaction between the wheel-sets and the rail is accomplished by using the non-linear Hertzian model with hysteresis damping. A sensitivity analysis is done to evaluate the variables affecting more the maintenance costs. The rail–sleeper contact is assumed extended to an area-defined contact zone, rather than a single-point assumption which fits better real case studies. Experimental validations show how prediction fits well experimental data.
A contact-area model for rail-pads connections in 2-D simulations: sensitivity analysis of train-induced vibrations
Vehicle System Dynamics ; 51 , 9 ; 1342-1362
2013
21 Seiten
Article (Journal)
English
Taylor & Francis Verlag | 2013
|Automotive engineering | 2013
|Visco-elastic contact spring in numerical simulations of train – track system vibrations
DOAJ | 2021
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