Nonlinear vibrations of guy cable systems
1985; Elsevier BV; Volume: 21; Issue: 1-2 Linguagem: Inglês
10.1016/0045-7949(85)90227-5
ISSN1879-2243
AutoresHenri Pastorel, Gaston Beaulieu,
Tópico(s)Magnetic Bearings and Levitation Dynamics
ResumoA nonlinear static and dynamic analysis has been performed with ADINA for the cable system of a 50-kW vertical axis wind turbine. The nonlinear static deformation and tension distribution are compared to the results of a nonlinear catenary cable model. The first natural frequencies and mode shapes, computed with ADINA, are in close agreement with experimental values obtained with the Ibrahim Time Domain (ITD) modal analysis method. The aerodynamic forces acting on the rotor of a vertical axis wind turbine contain many harmonics. These excitation forces located in a rotating coordinates system are transformed into the fixed coordinates of the guy cable system and a solution for the forced nonlinear vibration is obtained with ADINA. The results are compared to the experimental values obtained from field tests on IREQ-50-kW wind turbine.
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