Study on wind-induced vibration behavior of railway catenary in spatial stochastic wind field based on nonlinear finite element procedure

Yang Song, Zhigang Liu, Fuchuan Duan, Xiaobing Lu, Hongrui Wang

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

Due to its long-span structure and large flexibility, an electrified railway catenary is very sensitive to environmental wind load, especially the time-varying stochastic wind, which may lead to a strong forced vibration of contact line and deteriorate the current collection quality of the pantograph-catenary system. In this paper, in order to study the windinduced vibration behavior of railway catenary, a nonlinear finite element procedure is implemented to construct the model of catenary, which can properly describe the large nonlinear deformation and the nonsmooth nonlinearity of dropper. The spatial stochastic wind field is developed considering the fluctuating winds in along-wind, vertical-wind, and cross-wind directions. Using the empirical spectra suggested by Kaimal, Panofsky, and Tieleman, the fluctuating wind velocities in three directions are generated considering the temporal and spatial correlations. Based on fluid-induced vibration theory, the model of fluctuating forces acting on catenary are developed considering the spatial characteristics of catenary. The time- and frequency-domain analyses are conducted to study the wind-induced vibration behavior with different angles of wind deflection, different angles of attack, as well as different geometries of catenary. The effect of spatial wind load on contact force of pantograph-catenary system is also investigated.

Original languageEnglish
Article number011010
Number of pages14
JournalJournal of Vibration and Acoustics, Transactions of the ASME
Volume140
Issue number1
DOIs
Publication statusPublished - 22 Sep 2017
Externally publishedYes

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