Electromechanical active metamaterials and their applications in controlling elastic wave propagation

Yi, Kaijun; Chen, Yangyang; Zhu, Rui; Huang, Guoliang

doi:10.1360/tb-2021-0573

Cited by 5 publications

(1 citation statement)

References 95 publications

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“…The controlling forces responsible for such tunability can arise either from the metastructures themselves or external actuators, leading to the categorization of active piezoelectric MMs into two distinct types (see Figure 2a,b): in the first category, piezoelectric materials serve as the primary structural components, playing a fundamental role; in the second category, piezo-electric materials act as actuators and sensors, either attached to the surface of the main structure or embedded within it. [65,66,95] Notably, external circuits play a pivotal role in acting as the primary source for active control in both types of piezoelectric MMs.…”

Section: Piezoelectric Mmsmentioning

confidence: 99%

Wave Manipulation in Intelligent Metamaterials: Recent Progress and Prospects

Wu,

Jiang,

Jiang

et al. 2024

Adv Funct Materials

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Metamaterials (MMs), which include phononic crystals (PCs) as a particular type, exhibit anomalous wave propagation properties through artificial design of topologies or lattice forms of unit‐cells. Recent advancements in MMs signify an ascendant research trend, providing promising design ideas and means for unprecedented wave propagation properties. The imperative for on‐demand, real‐time active control of wave propagation underscores the significance of tunable manipulation of acoustic/elastic waves, promoting the design and development of tunable MMs. Furthermore, the versatility of intelligent materials and their ongoing development and innovation contribute significantly to the emergence of diverse intelligent MMs. This comprehensive survey provides an overview of recent advancements and current research trends in the interdisciplinary field of intelligent MMs with electro‐/magneto‐mechanical couplings. The primary objective of the review is to emphasize significant progress in agile manipulation of acoustic/elastic waves in electro‐/magneto‐mechanical coupled MMs, followed by an in‐depth exploration of intelligent metasurfaces, topological MMs, non‐Hermitian parity‐time symmetric wave systems, odd elastic MMs, and spatiotemporally modulated MMs. Special emphasis is given to multi‐field coupling effects. The review concludes with a summary and outlines potential prospects, offering a timely and informative guide for future studies on actively tunable PCs and MMs in practical engineering applications.

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Section: Piezoelectric Mmsmentioning

confidence: 99%

Wave Manipulation in Intelligent Metamaterials: Recent Progress and Prospects

Wu,

Jiang,

Jiang

et al. 2024

Adv Funct Materials

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Investigation of elastic waves frequency converted for the piezoelectric metamaterial cylindrical shell

Zhao,

Yao,

Zhang

et al. 2025

Composite Structures

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Design of tunable pneumatic metamaterials for low-frequency vibration control

Zhang,

Xu,

Chen

et al. 2024

AIP Advances

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For addressing the limitations of traditional elastic metamaterials in opening wide bandgaps below 100 Hz, a tunable pneumatic metamaterial plate with airbag local resonators is proposed. Utilizing the characteristics of airbags, such as small volume, large load-bearing capacity, easy stiffness adjustment, and the ability to provide multi-directional restoring forces, a structured low-stiffness local resonator with a certain load-bearing capacity is designed. By varying the gauge pressure of the airbag, the bandgap can be moved toward lower frequencies, thereby achieving a broad low-frequency vibration suppression capability for various wave propagations. The low-frequency vibration bandgap characteristics of the tunable pneumatic metamaterial are analyzed and verified by applying the finite element method. The results illustrate that this tunable pneumatic metamaterial can attenuate bending waves in the range of 22–121 Hz by adjusting the air pressure. Moreover, increasing the gauge pressure will not only shift the complete bandgap toward lower frequencies but also significantly expand the bandwidth of the complete bandgap. For instance, increasing the gauge pressure from 0 to 50 kPa reduces the opening frequency of the complete bandgap from 36 to 22 Hz while enhancing the relative bandwidth from 0.52 to 0.85. Extending from this, a parametric study was conducted to examine the impact of the structural parameters of airbag-type resonant units on bandgap evolution, summarizing the general principles for achieving wide low-frequency bandgaps. Finally, the bandgap characteristics of the tunable pneumatic metamaterial are confirmed through the frequency response function of a finite periodic structure.

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Electromechanical active metamaterials and their applications in controlling elastic wave propagation

Cited by 5 publications

References 95 publications

Wave Manipulation in Intelligent Metamaterials: Recent Progress and Prospects

Wave Manipulation in Intelligent Metamaterials: Recent Progress and Prospects

Investigation of elastic waves frequency converted for the piezoelectric metamaterial cylindrical shell

Design of tunable pneumatic metamaterials for low-frequency vibration control

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