Identification of Nonlinear Damping for Large-Amplitude Vibrations of Plates and Curved Panels

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dc.contributor.authorAmabili, Marcoen
dc.date.accessioned2016-11-11T13:25:28Z
dc.date.available2016-11-11T13:25:28Z
dc.date.issued2016
dc.description.abstractA nonlinear identification technique is presented to obtain the damping of isotropic and laminated sandwich rectangular plates and curved panels subjected to harmonic excitation as a function of the vibration amplitude. The response of the structures is approximated by (i) reduced-order models with 10 to 100 degrees of freedom and (ii) a single-degree of freedom Duffing oscillator. The method uses experimental frequency-amplitude data and the leastsquares technique to identify parameters and reconstruct frequency-response curves by spanning the excitation frequency in the neighbourhood of the lowest natural frequencies. In order to obtain the experimental data, a sophisticated measuring technique has been used. The results reveal a strongly nonlinear correlation between the damping and the vibration amplitude.en
dc.identifier.citationAmabili M. Identification of Nonlinear Damping for Large-Amplitude Vibrations of Plates and Curved Panels / M. Amabili // Nonlinear Dynamics–2016 (ND-KhPI2016) : proceedings of 5th International Conference, dedicated to the 90th anniversary of Academician V. L. Rvachev, September 27-30, 2016 = Нелінійна динаміка–2016 : тези доп. 5-ї Міжнар. конф., 27-30 вересня 2016 р. – Kharkov : NTU "KhPI", 2016. – P. 12-15.en
dc.identifier.urihttps://repository.kpi.kharkov.ua/handle/KhPI-Press/24528en
dc.language.isoen
dc.publisherNTU "KhPI"en
dc.subjectnonlinear vibrationsen
dc.subjectdampingen
dc.subjectexperimentsen
dc.titleIdentification of Nonlinear Damping for Large-Amplitude Vibrations of Plates and Curved Panelsen
dc.typeArticleen

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Nonlinear Dynamics–2016