Numerical simulation of the dynamic responses of railway overhead contact lines to a moving pantograph, considering a nonlinear dropper
Numerical simulation of the dynamic responses of railway overhead contact lines to a moving pantograph, considering a nonlinear dropper
- Neue Suche nach: Cho, Yong Hyeon
- Neue Suche nach: Cho, Yong Hyeon
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.
Dokumentinformationen
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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