Both the formulation of a nonlinear dropper and the proper implementation of a time-integration method are proposed for the finite element method (FEM) of pantograph-overhead contact line dynamics. The FEM models for a pantograph, overhead contact lines and dynamic interaction between a pantograph and overhead contact lines are validated step by step, by comparing simulated results with measured results. The dynamic responses of overhead contact lines to a moving pantograph, relevant to geometrically nonlinear droppers, are presented. Simulated vertical displacements agree well with measured displacements in a contact wire with the sag-to-span ratio of 1:2000. Thus, the simulations represent the effect of the sag on the dynamic response of overhead contact lines. For the thorough validation of pantograph-overhead contact line simulations, the simulated strains in a contact wire were compared with measurements. In previous studies, the simulated strains have not been validated using measurements taken when a pantograph passes. Simulations in this study agreed with the measurements in terms of maximum values and global shape.
Numerical simulation of the dynamic responses of railway overhead contact lines to a moving pantograph, considering a nonlinear dropper
Numerische Simulation des dynamischen Verhaltens von Eisenbahnfahrleitungen gegenüber einem bewegten Stromabnehmer unter Berücksichtigung eines nichtlinearen Fahrdrahthängers
2008
22 Seiten, 16 Bilder, 4 Tabellen, 27 Quellen
Aufsatz (Konferenz)
Englisch
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