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Modelling of pantograph-catenary interaction around critical speed
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics, Väg- och spårfordon samt konceptuell fordonsdesign. KTH, School of Engineering Sciences (SCI), Centres, The KTH Railway Group.ORCID iD: 0000-0002-9971-4729
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics, Väg- och spårfordon samt konceptuell fordonsdesign. KTH, School of Engineering Sciences (SCI), Centres, The KTH Railway Group.ORCID iD: 0000-0001-7393-569X
KTH, School of Engineering Sciences (SCI), Engineering Mechanics, Vehicle Engineering and Solid Mechanics, Väg- och spårfordon samt konceptuell fordonsdesign. KTH, School of Engineering Sciences (SCI), Centres, The KTH Railway Group.ORCID iD: 0000-0002-8237-5847
2022 (English)In: Proceedings of  the Fifth International Conference on Railway Technology: Research, Development and Maintenance, 2022Conference paper, Published paper (Refereed)
Abstract [en]

The dynamic interaction of pantograph and catenary in electrified railway systems has considerable research attention, both in terms of simulation and of measurements. The simulation benchmark of 2015 proved a good base of agreement between established models, but also showed that deviations between the different models increase when the simulated system approaches critical speeds. From these deviations it can be concluded that some of the models in the benchmark better depict the system behaviour around critical speed than others. Therefore, this paper analyses and compares measurement data from the Green Train project in Sweden, which includes speed at and over critical level, to simulations performed with one of the participating models, the finite element (FE) based CaPaSIM model. Based on this comparison,modelling alternatives are implemented and tested in CaPaSIM, to examine if they improve the accuracy of the model in the speed range around critical speeds. These alternative modelling approaches are to a large extent based on previous studies in thefield, such as other models that  participated in the benchmark. The varied aspects include choice of element type for single components of the catenary and element mesh resolution. On the pantograph side, the effect of separately modelling independent flexible collector strips is studied. The modelling choices that prove to be most promising during the initial variation tests are presented and recommendations are given for further investigations of possible improvements.

Place, publisher, year, edition, pages
2022.
Keywords [en]
pantograph-catenary dynamics, critical speed, finite element modelling, electric railways
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-314992OAI: oai:DiVA.org:kth-314992DiVA, id: diva2:1677460
Conference
The Fifth International Conference on Railway Technology: Research, Development and Maintenance 22-25 August, 2022 | Montpellier, France
Note

QC 20220822

Available from: 2022-06-27 Created: 2022-06-27 Last updated: 2022-08-22Bibliographically approved

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Schick, BastianLiu, ZhendongStichel, Sebastian

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CiteExportLink to record
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