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Browsing by Publisher "American Society of Mechanical Engineers(ASME)"

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    Nonlinear transverse vibrations and 3:1 internal resonances of a beam with multiple supports
    (American Society of Mechanical Engineers(ASME), 2008) Özkaya E.; Baǧdatli S.M.; Öz H.R.
    In this study, nonlinear transverse vibrations of an Euler-Bernoulli beam with multiple supports are considered. The beam is supported with immovable ends. The immovable end conditions cause stretching of neutral axis and introduce cubic nonlinear terms to the equations of motion. Forcing and damping effects are included in the problem. The general arbitrary number of support case is considered at first, and then 3-, 4-, and 5-support cases are investigated The method of multiple scales is directly applied to the partial differential equations. Natural frequencies and mode shapes for the linear problem are found. The correction terms are obtained from the last order of expansion. Nonlinear frequencies are calculated and then amplitude and phase modulation figures are presented for different forcing and damping cases. The 3:1 internal resonances are investigated. External excitation frequency is applied to the first mode and responses are calculated for the first or second mode. Frequency-response and force-response curves are drawn. Copyright © 2008 by ASME.

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