Multi modes coupling galloping of slender structures

Authors

  • Nguyen Huy Cung
    Industrial University of Ho Chi Minh City, VN
  • Do Cao Phan
    Industrial University of Ho Chi Minh City, VN
  • Le Van Hung
    Industrial University of Ho Chi Minh City, VN
  • Huynh Le Em
    Industrial University of Ho Chi Minh City, VN

Keywords:

Aeroelasticity; Aerodynamics; wind-induced instability; wind tunnel tests

Abstract

The paper presents a general theoretical framework for galloping analysis of slender structures, taking into account the coupling among modes, the modes shapes, and the variation along the structure of mass per unit length and mean wind velocity. The theory is then applied to a real structure. In the galloping analysis, aerodynamic coefficients are obtained from wind tunnel tests. The results of the analysis show crucial points different from conventional analysis.

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References

DICAT (2010). Dynamic analysis of “Megaframe” of the Building in Varesine – Milan under wind actions. Technical report (in Italian).

Glauert, H. (1919). The rotation of an aerofoil about a fixed axis. British Advisory Committee for Aeronautics (ARC) R & M No. 595. Technical Report of ARC for 1918–1919, 443-447.

Hartog J.P.D., (1932). Transmission-line vibration due to sleet. Institute of Electrical Engineers, 51, 1074–1086.

Macdonald and Larose (2006). A unified approach to aerodynamic damping and drag/lift instabilities, and its application to dry inclined cable galloping. Journal of Fluids and Structures, 22(2), 229-252.

Meirovitch L., (1986). Elements of vibration analysis (2nd edition), McGraw-Hill.

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Received: 04-06-2020
Accepted: 04-06-2020
Published: 07-12-2016

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How to Cite

Cung, N. H., Phan, D. C., Hung, L. V., & Em, H. L. (2016). Multi modes coupling galloping of slender structures. HO CHI MINH CITY OPEN UNIVERSITY JOURNAL OF SCIENCE - ENGINEERING AND TECHNOLOGY, 6(2), 41–45. Retrieved from https://journalofscience.ou.edu.vn/index.php/tech-en/article/view/384

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Copyright (c) 2016 Nguyen Huy Cung; Do Cao Phan; Le Van Hung; Huynh Le Em

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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.