Based on SDTools libraries, SNCF has developed an efficient and powerful finite element library for the simulation of pantograph/catenary interaction named OSCAR.This software is certified against EN50318 and validated against measurements. It is routinely used for design studies. Although OSCAR has been developed on deterministic approach, it is quite clear that a basic statistical strategy would give a higher confidence in results and be useful for industrial use. This paper presents the first developments of this new methodology, introducing three kinds of irregularities, namely catenary geometry irregularity, catenary wear and transient aerodynamic forces. Aerodynamic forces and geometrical irregularities of catenaries are thought to be significant sources of variability in measurement and this paper proposes methods to take them into account. Results are compared with measurements to correlate the effect of the considered parameters with experimentally observed variability. Finally, a virtual certification example is shown, with a study of the influence of speed on the impact of variability.
Introduction of variability into pantograph–catenary dynamic simulations
Vehicle System Dynamics ; 52 , 10 ; 1254-1269
2014
16 Seiten, 14 Bilder, 3 Tabellen, 10 Quellen
Article (Journal)
English
Introduction of variability into pantograph–catenary dynamic simulations
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