Study on Galloping Oscillation of Iced Catenary System under Cross Winds
Joint Authors
Yang, Y. R.
Chen, Guo
Yang, Yang
Li, Peng
Source
Issue
Vol. 2017, Issue 2017 (31 Dec. 2017), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2017-10-22
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
This paper mainly aims at revealing the nature of the galloping oscillation of iced catenary system under cross winds.
The aerodynamic force on the iced catenary system is assumed to be quasi-steady, and then the quasi-steady aerodynamic lift and drag coefficients are completed in FLUENT.
By fitting the discrete simulation data, the expression of the vertical aerodynamic force is further obtained.
According to the Den Hartog vertical galloping mechanism, the stability of iced catenary is discussed and the initial icing angle corresponding to the critical stability is obtained.
On this basis, the dynamic model of the simple iced catenary system under cross winds is established.
The partial differential vibration equation of the system is converted into the ordinary differential equation by the Galerkin method and then numerically solved.
The condition of the unstable catenary motion in simulation is in agreement with that from theoretical stability analysis.
In addition, the effects of structural damping, initial icing angle, and wind velocity on the system responses are investigated.
American Psychological Association (APA)
Chen, Guo& Yang, Y. R.& Yang, Yang& Li, Peng. 2017. Study on Galloping Oscillation of Iced Catenary System under Cross Winds. Shock and Vibration،Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1204003
Modern Language Association (MLA)
Chen, Guo…[et al.]. Study on Galloping Oscillation of Iced Catenary System under Cross Winds. Shock and Vibration No. 2017 (2017), pp.1-16.
https://search.emarefa.net/detail/BIM-1204003
American Medical Association (AMA)
Chen, Guo& Yang, Y. R.& Yang, Yang& Li, Peng. Study on Galloping Oscillation of Iced Catenary System under Cross Winds. Shock and Vibration. 2017. Vol. 2017, no. 2017, pp.1-16.
https://search.emarefa.net/detail/BIM-1204003
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1204003