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1 104/1 航太系 王怡仁 教授 期刊論文 發佈 Effects of a Dynamic Vibration Absorber on Nonlinear Hinged-Free Beam , [104-1] :Effects of a Dynamic Vibration Absorber on Nonlinear Hinged-Free Beam期刊論文Effects of a Dynamic Vibration Absorber on Nonlinear Hinged-Free BeamYi-Ren Wang; Ting-Hung KuoNonlinear vibration;Beam vibration;Internal resonance;Vibration absorberJournal of Engineering Mechanics 142(4), 04016003(25pages)This study examined the vibrations of a hinged-free nonlinear beam placed on a nonlinear elastic foundation. The authors found that specific combinations of an elastic modulus in the elastic foundation resulted in 1:3 internal resonances in the first and second modes of the beam. This prompted adding a dynamic vibration absorber (DVA) on the elastic beam in order to prevent internal resonance and suppress vibrations. When the DVA was placed at the free end of the beam, the boundaries were time dependent. Thus, a shifting polynomial function was used to convert the nonhomogeneous boundary conditions into homogeneous boundary conditions. The authors analyzed this nonlinear system using the
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