Installation Guidelines for Shinkansen High Speed Overhead Contact Lines

Aboshi, Mitsuo; Tsunemoto, Mizuki

doi:10.2219/rtriqr.52.230

Cited by 6 publications

(7 citation statements)

References 3 publications

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“…In [5] a diagnosis procedure is proposed to identify catenary defects, such as those produced by creep phenomena, wear in cables and dropper length deviations, whose impact on the catenary dynamic performance are studied in [6]. Guideline values for certain installation error rates based on real measured data were proposed in [7], while variability in pantograph-catenary dynamic simulations regarding wear, aerodynamic effects and geometry irregularities is introduced in [8], in which the need for further studies on the field is suggested. This paper proposes an approach to deal with the variability introduced by installation errors.…”

Section: Introductionmentioning

confidence: 99%

Stochastic Monte Carlo simulations of the pantograph–catenary dynamic interaction to allow for uncertainties introduced during catenary installation

Gregori

Tur

Tarancón

et al. 2018

Vehicle System Dynamics

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Section: Introductionmentioning

confidence: 99%

Stochastic Monte Carlo simulations of the pantograph–catenary dynamic interaction to allow for uncertainties introduced during catenary installation

Gregori

Tur

Tarancón

et al. 2018

Vehicle System Dynamics

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“…The impact of catenary geometry was studied through sensitivity analysis of the pre-sag [1] or other control parameters [2]. Wave propagation in the cables is also a well-studied problem as it is the main limit to the train velocity.…”

Section: Introductionmentioning

confidence: 99%

Waves, modes and properties with a major impact on dynamic pantograph-catenary interaction

Van

Massat

Balmès

2017

Journal of Sound and Vibration

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. Waves, modes and properties with a major impact on dynamic pantograph-catenary interaction. Journal of Sound and Vibration, 2017, 402 (août 2017), pp.51-69. 10.1016/j.jsv.2017 Waves, modes and properties with a major impact on dynamic pantograph-catenary interaction AbstractUnderstanding the dynamic behavior of the pantograph-catenary system is crucial for design improvement, but many factors influence the contact force, which is the main design objective. To give a proper understanding of dynamic characteristics, the paper uses a combination of mass drop tests on a catenary, analytic models and parametric finite element model simulations allowing a fine analysis of the influence of train speed. The first contributor to contact force variations is the geometry of the catenary under gravity loading. This parameter is however shown to be insufficient to explain higher frequency effects. The second contributor is the propagation of waves in the contact and messenger wires. The influence of wave dispersion is first demonstrated, which emphasizes the importance of considering the bending stiffness. Wave compensation by droppers and reflections at the mast are then shown to be important. Characteristic times associated with wave group velocities are finally used to explain the series of harmonic contributions visible in spectra in the catenary and pantograph frames. Finally, modes are shown to play a role particularly when their frequencies coincide with other contributions. The notion of mode groups, associated wave velocities and relevant design variables are discussed. Several observations pave the way for future work on catenary design.

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“…[4] analyses span length, static uplift force and pantograph system parameters, and Ref. [5] analyses catenary geometry through installation error indices.…”

Section: Introduction Of Variability Into Pantograph-catenary Dynamicmentioning

confidence: 99%

Introduction of variability into pantograph–catenary dynamic simulations

Van

Massat

Laurent³

et al. 2014

Vehicle System Dynamics

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is an open access repository that collects the work of Arts et Métiers ParisTech researchers and makes it freely available over the web where possible. 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 precisely and can vary in time and space. To get a better chance of addressing extreme or combined critical conditions, methodologies to consider variability are thus necessary. Aerodynamic forces and geometrical irregularities of catenaries are thought to be significant sources of variability in measurement and this paper proposes methods to take them into account. Results are compared with measurements to correlate the effect of the considered parameters with experimentally observed variability. Finally, a virtual certification example is shown, with a study of the influence of speed on the impact of variability.

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Installation Guidelines for Shinkansen High Speed Overhead Contact Lines

Cited by 6 publications

References 3 publications

Stochastic Monte Carlo simulations of the pantograph–catenary dynamic interaction to allow for uncertainties introduced during catenary installation

Stochastic Monte Carlo simulations of the pantograph–catenary dynamic interaction to allow for uncertainties introduced during catenary installation

Waves, modes and properties with a major impact on dynamic pantograph-catenary interaction

Introduction of variability into pantograph–catenary dynamic simulations

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