Reconfigurable coupled-resonator acoustoelastic waveguides in fluid-filled phononic metaplates

Wang, Tingting; Wang, Yan-Feng; Deng, Zichen; Laude, Vincent; Wang, Yue-Sheng

doi:10.1016/j.compstruct.2022.116355

Cited by 21 publications

(7 citation statements)

References 46 publications

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“…Tunable metamaterials may be classified into two types, reconfigurable and active. Reconfigurable (or switchable) elastic metamaterials have mechanically reconfigurable structures to achieve tunability [359][360][361][362][363][364][365][366][367][368]. For example, Yuan et al [361] proposed reconfigurable elastic metamaterials composed of screw bolts and nuts, as shown in figure 20(a).…”

Section: Enhancing Practical Applications Of Elastic Metamaterialsmentioning

confidence: 99%

Elastic metamaterials for guided waves: from fundamentals to applications

Lee,

Kim

2023

Smart Mater. Struct.

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Guided waves, elastic waves propagating through bounded structures, play a pivotal role in various applications, including ultrasonic non-destructive testing and structural health monitoring. Recently, elastic metamaterials artificially engineered to exhibit physical properties not typically seen in nature have emerged as a ground-breaking approach, heralding a new era in guided wave-based technologies. These metamaterials offer innovative solutions to overcome the inherent constraints of traditional guided wave-based technology. This paper comprehensively reviews elastic metamaterials from their fundamental principles to diverse applications, focusing on their transformative impact in guided wave manipulation.

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Section: Enhancing Practical Applications Of Elastic Metamaterialsmentioning

confidence: 99%

Elastic metamaterials for guided waves: from fundamentals to applications

Lee,

Kim

2023

Smart Mater. Struct.

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“…For example, Ma et al (2022) control the waveguide path by controlling the height of the screw in the elastic plate. In addition to adjusting the geometry or position of the unit cell, such as filling it with different heights of liquid to form line defects that can be used in reconfigurable waveguides (Wang et al, 2022(Wang et al, , 2023. Electric field regulation is the most studied way of active modulation of phononic crystals.…”

Section: Introductionmentioning

confidence: 99%

Reconfigurable local-resonance elastic waveguides in piezoelectric phononic crystals plate

Sun,

Xu,

et al. 2024

Journal of Intelligent Material Systems and Structures

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A local-resonance piezoelectric phononic crystal consisting of a quadrangular prism piezoelectric scatterer polarized along the z-axis and wrapped by a plexiglass layer is proposed in this work. The short-circuit external electrical boundary condition is selectively added to the upper and lower surfaces of the piezoelectric scatterer to tune the distribution of polarized charges generated by the localized vibration modes. The band structures of the unit cell are calculated using the finite element method, where the upper boundary of the second complete bandgap is replaced by a passband of type of quadrupole local resonance mode. This passband lies entirely in the second bandgap under the open-circuit external electrical condition. The results of the band structures are verified by the transmission loss of the semi-infinite structure in the frequency domain. Two piezoelectric waveguides with complex paths are designed, showing that elastic waves propagate completely along the given waveguide paths at a particular frequency range. The proposed phononic crystals without additional circuit elements can be assembled into waveguides with arbitrary reconfigurable paths, transmitting elastic waves.

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“…Using different types of mechanisms, Bragg band gaps [ 5 , 6 ], local resonance gaps [ 7 , 8 , 9 ] and inertial induced gaps [ 10 , 11 ] were investigated to satisfy various structural requirements of applications in vibration and noise control. Numerous studies [ 12 , 13 , 14 ] have demonstrated that structural configuration and material properties play a significant role in determining wave propagation and attenuation performance regardless of whether underlying mechanisms are used.…”

Section: Introductionmentioning

confidence: 99%

Inverse Design of Micro Phononic Beams Incorporating Size Effects via Tandem Neural Network

Miao

et al. 2023

Materials

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Phononic crystals of the smaller scale show a promising future in the field of vibration and sound reduction owing to their capability of accurate manipulation of elastic waves arising from size-dependent band gaps. However, manipulating band gaps is still a major challenge for existing design approaches. In order to obtain the microcomposites with desired band gaps, a data drive approach is proposed in this study. A tandem neural network is trained to establish the mapping relation between the flexural wave band gaps and the microphononic beams. The dynamic characteristics of wave motion are described using the modified coupled stress theory, and the transfer matrix method is employed to obtain the band gaps within the size effects. The results show that the proposed network enables feasible generated micro phononic beams and works better than the neural network that outputs design parameters without the help of the forward path. Moreover, even size effects are diminished with increasing unit cell length, the trained model can still generate phononic beams with anticipated band gaps. The present work can definitely pave the way to pursue new breakthroughs in micro phononic crystals and metamaterials research.

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Reconfigurable coupled-resonator acoustoelastic waveguides in fluid-filled phononic metaplates

Cited by 21 publications

References 46 publications

Elastic metamaterials for guided waves: from fundamentals to applications

Elastic metamaterials for guided waves: from fundamentals to applications

Reconfigurable local-resonance elastic waveguides in piezoelectric phononic crystals plate

Inverse Design of Micro Phononic Beams Incorporating Size Effects via Tandem Neural Network

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