Sound radiation and non-negative intensity of a metaplate consisting of an acoustic black hole plus local resonators

Deng, Jie; Guasch, Oriol; Maxit, Laurent; Gao, Nansha

doi:10.1016/j.compstruct.2022.116423

Cited by 38 publications

(4 citation statements)

References 78 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…To address this issue, Krylov 33 proposed a method of using a damping material, which has been verified through experiments on a composite damping plate with a power-law contour depression. Deng et al 34,35 discussed the wave propagation of ABH with the damping layer in detail and studied the influence of the damping layer on the ABH structure. Various forms of ABH damping structures have been developed over the past decade, which have proven to be effective in absorbing flexural waves.…”

Section: Introductionmentioning

confidence: 99%

A programmable metasurface based on acoustic black hole for real-time control of flexural waves

Su,

2024

Journal of Applied Physics

View full text Add to dashboard Cite

The time-modulated active medium with linear independent frequency conversion method has been demonstrated to enable wave orientation and reconstruction. However, due to the symmetric scattering field, this technique requires intricate microcircuit designs. To overcome this limitation, this paper proposes a tunable piezoelectric metasurface based on acoustic black holes (ABHs) to redirect flexural wave reflections. The system can convert an incident flexural wave into a reflected wave of any direction and frequency. This is accomplished through the linear time modulation of the sensing signal, which breaks the constraints of Snell’s law inherent in traditional designs and is insensitive to the incident amplitude. The coupling of the ABH damping system with a linear independent frequency conversion mechanism allows for the conversion of an incident flexural wave into a reflected wave in any direction and frequency while also eliminating the influence of second harmonic reflection on the wave field and simplifying the time modulation circuit. In addition, this paper demonstrates arbitrary angle reflection, focusing, beam splitting, and frequency conversion of the incident wave. By improving the flexibility of elastic wave manipulation, this paper introduces a new approach for active control of elastic waves and provides a design method that can be employed in a variety of applications ranging from vibration protection of engineering structures to vibration sensing and evaluation.

show abstract

Section: Introductionmentioning

confidence: 99%

A programmable metasurface based on acoustic black hole for real-time control of flexural waves

Su,

2024

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…Moreover, Ilanko also used inertial penalty to speed up the convergence of the method [51]. The advantage of using artificial springs is that of allowing the simulation of arbitrary constraints, exemplified by plate [52] and cylindrical shell [53,54] boundary conditions, connections between plates and resonators [55,56], and beam [57] and plate-shell coupling systems [58,59]. Another useful approach in the RRM is the Lagrangian multiplier method (LMM) [60,61].…”

Section: Introductionmentioning

confidence: 99%

An artificial spring component mode synthesis method for built-up structures

Deng

Guasch

Maxit

et al. 2023

International Journal of Mechanical Sciences

Self Cite

View full text Add to dashboard Cite

“…In 2021, the wave attenuation and energy transfer mechanism of metamaterials with a negative effective mass density were discovered, providing a similar research method [ 42 ]. Deng proposed the design of a metamaterial ABH plate and studied the characteristics of its acoustic radiation [ 43 , 44 ]. Although acoustic metamaterials have attracted much attention and research, achieving a broadband frequency performance with locally resonant metamaterials remains challenging.…”

Section: Introductionmentioning

confidence: 99%

Multimodal Local Resonators for Low-Frequency Amelioration of Acoustic Black Holes

Zhao

et al. 2023

Materials

Self Cite

View full text Add to dashboard Cite

Acoustic black holes (ABHs) are effective at suppressing vibrations at high frequencies, but their performance at low frequencies is limited. This paper aims to improve the low-frequency performance of ABH plates through the design of a metamaterial acoustic black hole (MMABH) plate. The MMABH plate consists of a double-layer ABH plate with a set of periodic local resonators installed between the layers. The resonators are tuned to the low-frequency peak points of the ABH plate, which are identified using finite element analysis. To dissipate vibration energy, the beams of the resonators are covered with damping layers. A modal analysis of the MMABH plate is performed, confirming its damping effect over a wide frequency band, especially at low frequencies.

show abstract

Sound radiation and non-negative intensity of a metaplate consisting of an acoustic black hole plus local resonators

Cited by 38 publications

References 78 publications

A programmable metasurface based on acoustic black hole for real-time control of flexural waves

A programmable metasurface based on acoustic black hole for real-time control of flexural waves

An artificial spring component mode synthesis method for built-up structures

Multimodal Local Resonators for Low-Frequency Amelioration of Acoustic Black Holes

Contact Info

Product

Resources

About