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
1995-01-01
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.
File in questo prodotto:
Non ci sono file associati a questo prodotto.
I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
