10 April 2018 Tailoring vibration mode of a uniform beam by acoustic metamaterial synthesis
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Abstract
Acoustic metamaterials have attractive potential in elastic wave attenuation and wave guiding over specific frequency ranges. In this research, we apply acoustic metamaterial into the manipulation of stationary wave in a finite beam, i.e., tailoring vibration modes of the structure. Rather than geometrical modification, we demonstrate that vibration modes can be adjusted by combing the resonance and bandgap characteristics of piezoelectric metamaterial. For instance, it’s shown that new vibration modes can be created while the region with excitation applied has minimum displacement. Furthermore, it’s illustrated that resonance region of the metamaterial beam can be arbitrarily assigned due to the adaptiveness of the piezoelectric metamaterial beam. The analytical investigations are confirmed with finite element simulations.
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Jiawen Xu, Jiawen Xu, Shilong Li, Shilong Li, J. Tang, J. Tang, } "Tailoring vibration mode of a uniform beam by acoustic metamaterial synthesis", Proc. SPIE 10595, Active and Passive Smart Structures and Integrated Systems XII, 105952L (10 April 2018); doi: 10.1117/12.2296781; https://doi.org/10.1117/12.2296781
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