Statistical identiﬁcation of geometric parameters for high speed train catenary
Communication avec acte
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 relevant parameters affecting the geometry. After correction for the dynamic nature of the measurement, provide a database of measurements. One then seeks to solve the statistical inverse problem using the maximum entropy principle and the maximum likelihood method. Two methods of multivariate density estimations are presented, the Gaussian kernel density estimation method and the Gaussian parametric method. The results provide statistical information on the signiﬁcant parameters and show that the messenger wire tension of the catenary hides sources of variability that are not yet taken into account in the model.
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Article dans une revue avec comité de lectureVO VAN, Olivier; MASSAT, Jean-Pierre; LAURENT, Christophe; BALMES, Etienne (Taylor & Francis, 2014)Currently, pantograph-catenary dynamic simulations 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; 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 ...
Article dans une revue avec comité de lectureVO VAN, Olivier; MASSAT, Jean-Pierre; BALMES, Etienne (Elsevier, 2017)Understanding the dynamic behavior of the pantograph-catenary system is crucial for design improvement, but many factors inuence the contact force, which is the main design objective. To give a proper un-derstanding of ...
Article dans une revue avec comité de lectureMASSAT, Jean-Pierre; BALMES, Etienne; BIANCHI, Jean-Philippe; VAN KALSBEEK, Guido (Taylor & Francis, 2015)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 ...
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 ...