The response of a perfectly flexible elastic suspended cable driven by mean wind speed, blowing perpendicularly to the cables’ plane is investigated using a two degree-of-freedom model. The modes are coupled through quadratic and cubic terms arising from geometric and aerodynamic effects. The associated linear frequencies are assumed to be in an almost 2:1 ratio so that internal resonance conditions occur. Steady-state amplitude solutions are determined as a function of the mean wind speed and their stability analyzed. The relevant importance of both kind of non-linearities is discussed.

Non-linear galloping of iced suspended cables with two-to-one internal resonance

PICCARDO, GIUSEPPE
1995

Abstract

The response of a perfectly flexible elastic suspended cable driven by mean wind speed, blowing perpendicularly to the cables’ plane is investigated using a two degree-of-freedom model. The modes are coupled through quadratic and cubic terms arising from geometric and aerodynamic effects. The associated linear frequencies are assumed to be in an almost 2:1 ratio so that internal resonance conditions occur. Steady-state amplitude solutions are determined as a function of the mean wind speed and their stability analyzed. The relevant importance of both kind of non-linearities is discussed.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11567/391542
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