Analysis of Acoustic Black Hole effect for Vibration Damp-ing of Euler-Bernoulli Beam

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کد مقاله : 1083-ISAV2019 (R1)
1مهندسی مکانیک، دانشکده مهندسی مکانیک، دانشگاه صنعتی نوشیروانی بابل، بابل، ایران
2دانشگاه صنعتی نوشیروانی بابل، بابل، ایران
The concept of an Acoustic Black Hole (ABH) has been developed and utilized as a new approach for passively attenuating structural vibration. In the present work, the effect of ABH absorb-er on the transient vibrational behavior and the steady-state of a Free-Free beam with linear and torsional springs on one edge is compared with the beam with a constant thickness-damping layer. In previous work, the focus was on the effect of ABH in the semi-infinite beams, while in the present work, the effect of ABH on a finite length beam is studied. The obtained results show that the superiority of ABH's to the uniform layer of the viscous layer occurs only in a narrow range of the parameters.
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