In the paper a numerical procedure is presented for the dynamic analysis of elastic cables subjected to turbulent wind excitation in quasi-steady conditions. The proposed methodology, which takes geometrical and aerodynamic non-linearities into account, is based on artificial simulation of turbulence, on finite-element modelling of the cables and on a step-by-step implicit procedure for the integration of the dynamic equilibrium equations. As a first application, the dynamic behaviour of a cable in 2:1 internal resonance conditions is studied, focusing on some aspects of the influence of wind turbulence on galloping oscillations.
Numerical analysis of the non-linear dynamic behaviour of suspended cables under turbulent wind excitation
MARTINELLI, LUCA;PEROTTI, FEDERICO
2001-01-01
Abstract
In the paper a numerical procedure is presented for the dynamic analysis of elastic cables subjected to turbulent wind excitation in quasi-steady conditions. The proposed methodology, which takes geometrical and aerodynamic non-linearities into account, is based on artificial simulation of turbulence, on finite-element modelling of the cables and on a step-by-step implicit procedure for the integration of the dynamic equilibrium equations. As a first application, the dynamic behaviour of a cable in 2:1 internal resonance conditions is studied, focusing on some aspects of the influence of wind turbulence on galloping oscillations.File in questo prodotto:
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