OSCAR Statement of Methods
Article dans une revue avec comité de lecture
OSCAR (Outil de Simulation du CAptage pour la Reconnaissance des défauts) is the pantograph–catenary dynamic software developed by Société Nationale des Chemins de fer Français (SNCF) since 2004. A three-dimensional finite element (FE) mesh allows the modelling of any catenary type: alternating current (AC) or direct current (DC) designs, and conventional or high-speed lines. It is a representative of the real overhead line geometry, with contact wire (CW) irregularities, staggered alignment of the CW, dropper spacing, wire tension, etc. Nonlinearities, such as slackening of droppers and unilateral contact between the pantograph and the CW, are taken into account. Several pantograph models can be used, with a complexity level growing from the three-lumped-mass model to the multibody model. In the second case, a cosimulation between the FE method catenary and the multibody pantograph models has been developed. Industrial features for pre- and post-treatments were developed to increase robustness of results and optimise computation time. Recent developments include volume meshing of the CW for stress computation or statistical analysis and lead to new fields of studies such as fatigue failure or design optimisation. OSCAR was fully validated against in-line measurements for its different AC and DC catenary models as well as its different pantograph models (with independent strips for instance) and has continuously been certified against EN50318 since 2008.
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Pantograph catenary dynamic optimisation based on advanced multibody and finite element co-simulation tools Communication avec acteLAURENT, Christophe; MASSAT, Jean-Pierre; NGUYEN TAJAN, T.M.L.; BIANCHI, Jean-Philippe; BALMES, Etienne (2013)This paper presents recent developments undertaken by the SNCF Innovation & Research Department on numerical modelling of pantograph catenary interaction. It aims at describing an efficient co-simulation process between ...
Communication avec acteMASSAT, Jean-Pierre; BALMES, Etienne; BIANCHI, Jean-Philippe (Civil-Comp Press, 2016)Fatigue cracks can induce fracture of the catenary Contact Wire (CW) and thus huge costs for the operator. Nowadays the wear criterion to replace the CW leads to lifespan over than 50 years, and the catenary can see a very ...
Pantograph catenary dynamic optimisation based on advanced multibody and finite element co-simulation tools Article dans une revue avec comité de lectureMASSAT, Jean-Pierre; LAURENT, Christophe; BIANCHI, Jean-Philippe; BALMES, Etienne (Taylor & Francis, 2014)This paper presents recent developments undertaken by SNCF Innovation & Research Department on numerical modelling of pantograph catenary interaction. It aims at describing an efficient co-simulation process between Finite ...
Communication avec acteVO VAN, Olivier; MASSAT, Jean-Pierre; LAURENT, Christophe; BALMES, Etienne (IAVSD, 2013)Currently, pantograph-catenary dynamic simulations codes are mainly based on deterministic approaches. However, the contact force between catenary and pantograph depends on many key parameters that are not always quantified ...
Communication avec acteVO VAN, Olivier; BALMES, Etienne; MASSAT, Jean-Pierre (KUL, 2014)Pantograph/catenary interaction is known to be strongly dependent on the static geometry of the catenary, this research thus seeks to build a statistical model of this geometry. Sensitivity analyses provide a selection of ...