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1 Journal of Theoretical and Applied Mechanics

1 2024

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Dynamic response of a guy line of a guyed tower to stochastic wind excitation: 3D non-linear small-sag cable model

Weber Hanna, Jabłonka Anna, Iwankiewicz Radosław

Journal of Theoretical and Applied Mechanics

2024

Vol. 62 nr 2

307--319

In the proposed approach, a 3D response of the guy line treated as a small-sag cable is considered. The strong dynamic wind action leads to the base motion excitation of the guy line. Longitudinal cable displacements are coupled with lateral ones. Hamilton’s principle and Galerkin method are used to obtain the set of differential equations of motion. The cable excitation is assumed as a narrow-band stochastic process modelled as a response of an auxiliary linear filter to a Gaussian white noise process. The equivalent linearization technique is applied to obtain approximate analytical results verified against the numerical Monte Carlo simulation.