Considerations on active control of crosswind stability of railway vehicles

Heckmann, Andreas; Kurzeck, Bernhard; Bünte, Tilman; Loose, Sigfried

doi:10.1080/00423114.2014.901539

Cited by 9 publications

(12 citation statements)

References 9 publications

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“…Already initiated and future applications of the library concern the synthesis of advanced observer and control lay-outs, (Schwarz et al, 2018), (Heckmann et al, 2016), and multidisciplinary simulation tasks such as the interaction of running dynamics and drive train, the systems engineering of pneumatic brake systems (Ehret, 2018) and research on advanced system design and assessment scenarios in order to ensure the crosswind stability of railway vehicles, cf. (Heckmann et al, 2014b).…”

Section: 3384/ecp19157323mentioning

confidence: 99%

Overview on the DLR RailwayDynamics Library

Heckmann

Ehret

Grether

et al. 2019

Linköping Electronic Conference Proceedings

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The newly released commercial DLR RailwayDynamics Library is intended to support the design, optimization and control development as well as hardware-and software-inthe-loop testing of railway vehicles mainly on the system level. To this aim, it provides the capability to consider vehicle dynamics issues such as traction, comfort and safety in multi-domain engineering tasks by preparation of vehicle, track, wheel-rail contact models and roller rig scenarios on different levels of detail. Exploiting several precursor papers on specific railway modeling topics, their models have been collected and reorganized in order to propose a sound modeling framework dedicated to railway dynamics. The paper gives an overview on particular concepts and ideas of the library, presents several application examples and discusses two approaches to organize multi-domain modeling.

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Section: 3384/ecp19157323mentioning

confidence: 99%

Overview on the DLR RailwayDynamics Library

Heckmann

Ehret

Grether

et al. 2019

Linköping Electronic Conference Proceedings

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“…Especially the lightweight design in double-deck configuration of the high speed train (HST) of the project Next Generation Train (NGT) of the German Aerospace Centre needs a special safety system to reduce the risk for a derailment. In [2] four different concepts for a cross-wind stabilisation system were discussed. The most promising concept is the use of an electromagnetic actuator which generates an attraction force to the rail.…”

Section: Introductionmentioning

confidence: 99%

Analyses of an AC Linear Actuator for Cross-Wind Stabilisation and Rail Stress Reduction

Holtmann

2018

2018 IEEE International Conference on Electrical Systems for Aircraft, Railway, Ship Propulsion and Road Vehicles &Amp; Interna

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High-speed trains in light weight design require an actuator for crosswind stabilisation. Also rail stresses due to heat generation by linear eddy current brakes (LECB) are still in discussion. This paper deals with the concept and design method of an AC linear actuator for crosswind stabilisation and the reduction of rail heating. The linear actuator analysed in this work is first optimized for a maximum normal force for a given installation space and different pole pair numbers using an analytical approach. In a second step the brake force is analysed for different pole pair numbers with a harmonic 2-D-FEM analyses. To demonstrate the potential reduction of the rail temperature compared by using the linear eddy current brake of the ICE-3, a transient thermal 1-D-simulation of the rail head is done by using the heat generation rate of the harmonic 2-D-FEM analyses. The results show that the required normal force for crosswind stabilization determined in the previous work can be achieved. With the constraints that two ICE-3 units passes the rail at maximum speed and braking force, the rail temperature can be reduced by 55 • C compared to using the LECB of the high speed train ICE-3 of the German Railway (Deutsche Bahn).

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“…Characteristic Wind Curve (CWC) of the NGT train head and the NGT coach compared to the reference curve CRWC from (TSI HS RST 2008), cf. (Heckmann et al, 2014b).…”

Section: Overview On Vehicle Assessmentmentioning

confidence: 99%

“…But beyond that, the implementation is intended to support various research activities in aerodynamics and vehicle dynamics control within the NGT project, see e.g. (Fey et al, 2014), (Heckmann et al, 2014b). …”

Section: Motivationmentioning

confidence: 99%

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The DLR RailwayDynamics Library: the Crosswind Stability Problem

Heckmann

Grether

2017

Linköping Electronic Conference Proceedings

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High crosswinds affect the stability of railway vehicles, in particular if they run on very high speed to reduce traveling time, if they are configured as double-deck cars to increase the number of passenger seats and if they use lightweight design in order to reduce life-cycle costs. This is why crosswind stability is an active field of research within the project Next Generation Train. However, this field relies on the cooperation of two different domains, namely aerodynamics and vehicle dynamics. With this background a crosswind stability tool was implemented in Modelica as a part of the DLR RailwayDynamics Library. This tool gathers data from scaled wind tunnel measurements and multibody data on the railway vehicle in order to rapidly analyze and assess the risk of overturning due to high crosswinds. To a large extent the tool is oriented towards the associated homologation rules and standards. However, the tool is as well supposed to support future advancements of these standards by providing capabilities for the stochastic analysis of the crosswind stability problem.

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Considerations on active control of crosswind stability of railway vehicles

Cited by 9 publications

References 9 publications

Overview on the DLR RailwayDynamics Library

Overview on the DLR RailwayDynamics Library

Analyses of an AC Linear Actuator for Cross-Wind Stabilisation and Rail Stress Reduction

The DLR RailwayDynamics Library: the Crosswind Stability Problem

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