Nonlinear Galloping of Iced Quad-Bundle Conductors With Internal Resonances

YAN Bo; LIU Xiao-hui; ZHAO Li; ZHOU Lin-shu

doi:10.3879/j.issn.1000-0887.2014.01.005

Volume 35 Issue 1

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YAN Bo, LIU Xiao-hui, ZHAO Li, ZHOU Lin-shu. Nonlinear Galloping of Iced Quad-Bundle Conductors With Internal Resonances[J]. Applied Mathematics and Mechanics, 2014, 35(1): 39-49. doi: 10.3879/j.issn.1000-0887.2014.01.005

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Nonlinear Galloping of Iced Quad-Bundle Conductors With Internal Resonances

doi: 10.3879/j.issn.1000-0887.2014.01.005

¹College of Aerospace Engineering, Chongqing University, Chongqing 400044, P.R.China;²School of Civil Engineering & Architecture, Chongqing Jiaotong University, Chongqing 400074, P.R.China

Funds: The National Natural Science Foundation of China(51277168； 51308570)

Received Date: 2013-10-17
Rev Recd Date: 2013-11-27
Publish Date: 2014-01-15

Abstract

Abstract

Galloping of iced quad-bundle conductors with internal resonance was numerically investigated by means of nonlinear finite element method. Based on the numerical simulation of galloping processes of the typical iced quad-bundle conductor lines in both the steady and the stochastic wind fields, galloping characteristics of the iced conductor line with the ratio of the frequency of the first symmetric in-plane mode to the frequency of the out-of-plane mode being 2∶1 were discussed. It is shown that energy continuously interchanges between the vertical motion and transverse horizontal motion as internal resonance exists, which is apparently different from those of the line without internal resonance. The result provides a theoretical basis for the understanding of the coupling mechanism of galloping.
- iced quad-bundle conductor,
- galloping,
- internal resonance,
- nonlinearity

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References(17)

References

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