Tunable and active phononic crystals and metamaterials

YF Wang, YZ Wang, B Wu… - Applied …, 2020 - asmedigitalcollection.asme.org
Phononic crystals (PCs) and metamaterials (MMs) can exhibit abnormal properties, even far
beyond those found in nature, through artificial design of the topology or ordered structure of …

Vibration and noise control using shunted piezoelectric transducers: A review

JAB Gripp, DA Rade - Mechanical Systems and Signal Processing, 2018 - Elsevier
Among various strategies developed for the attenuation of noise and vibration in mechanical
structures, piezoelectric shunt dam**, which consists in connecting piezoelectric …

Graded elastic metasurface for enhanced energy harvesting

JM De Ponti, A Colombi, R Ardito, F Braghin… - New Journal of …, 2020 - iopscience.iop.org
In elastic wave systems, combining the powerful concepts of resonance and spatial grading
within structured surface arrays enable resonant metasurfaces to exhibit broadband wave …

A hybrid elastic metamaterial with negative mass density and tunable bending stiffness

Y Chen, G Hu, G Huang - Journal of the Mechanics and Physics of Solids, 2017 - Elsevier
Achieving vibration and/or wave attenuation with locally resonant metamaterials has
attracted a great deal of attention due to their frequency dependent negative effective mass …

Vibration suppression by mistuning acoustic black hole dynamic vibration absorbers

H Sheng, MX He, Q Ding - Journal of Sound and Vibration, 2023 - Elsevier
This paper presents a modified add-on strategy to reduce the transverse vibration of beam
structures using multiple acoustic black hole dynamic vibration absorbers (ABH-DVAs). The …

Graded multifunctional piezoelectric metastructures for wideband vibration attenuation and energy harvesting

M Alshaqaq, A Erturk - Smart Materials and Structures, 2020 - iopscience.iop.org
Unlike well-studied locally resonant (LR) metamaterials with a periodic array of identical
resonators,'graded'LR metamaterials consist of an array of resonators with a spatially …

Topological rainbow trap** and acoustic energy amplification in two-dimensional gradient phononic crystals

XL Tang, TX Ma, YS Wang - Applied Physics Letters, 2023 - pubs.aip.org
In this work, we numerically and experimentally investigate topological rainbow trap** and
energy amplification of acoustic waves in a gradient phononic crystal (PC) structure. Thanks …

Three-dimensional quasi-zero-stiffness metamaterial for low-frequency and wide complete band gap

Q Lin, J Zhou, K Wang, D Xu, G Wen, Q Wang - Composite Structures, 2023 - Elsevier
This paper presents a new class of locally resonant (LR) metamaterials with quasi-zero
stiffness (QZS) in three dimensions. The monolithic QZS property is achieved by optimizing …

[HTML][HTML] Experimental investigation of amplification, via a mechanical delay-line, in a rainbow-based metamaterial for energy harvesting

JM De Ponti, A Colombi, E Riva, R Ardito… - Applied Physics …, 2020 - pubs.aip.org
We experimentally demonstrate that a rainbow-based metamaterial, created by a graded
array of resonant rods attached to an elastic beam, operates as a mechanical delay-line by …

Broadening low-frequency bandgaps in locally resonant piezoelectric metamaterials by negative capacitance

K Yi, M Collet - Journal of Sound and Vibration, 2021 - Elsevier
This paper combines negative capacitance (NC) with inductance (L) to enlarge low-
frequency bandgap width in locally resonant piezoelectric metamaterials. The studied …