Nonlinear free vibrations of coupled spans of overhead transmission lines

被引:0
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作者
Sjoerd W. Rienstra
机构
[1] Eindhoven University of Technology,Department of Mathematics and Computing Science
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关键词
aero-elasticity; asymptotics; galloping; near-resonance; wind-induced vibrations;
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摘要
The weakly nonlinear, freely vibrating motion of a system of coupled spans of suspended overhead transmission lines is studied. It is shown that the natural vibration is the gravity mode, of which the tension component vanishes in the first harmonic. The problem originates from a study of the phenomenon of galloping, which is a high-amplitude periodic oscillation of overhead transmission lines due to steady crosswind. Particular attention is given to an intermodal resonance, which may be interesting for galloping control.
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页码:337 / 348
页数:11
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