Optimizing a distribution of resonators on a thin plate for the desired sound radiation

Jung, Jaesoon; Jensen, Jakob Søndergaard; Jeong, Cheol‐Ho; Jeon, Onyu; Wang, Semyung

doi:10.1016/j.jsv.2020.115926

Cited by 5 publications

(1 citation statement)

References 18 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These structures can achieve physical effects that differ from those obtained with traditional materials. To name a few examples, structures have been designed that can cause acoustic cloaking, 1, 2 yield more uniform sound radiation from thin plates, [3][4][5] achieve high transmission loss values through lightweight partitions, [6][7][8] and generate significant scattering with thin surfaces. 9 Additionally, several studies of AMs as compact, high-absorption surfaces can be found, 10 although references touching upon their angle-dependent behavior are much scarcer.…”

Section: Introductionmentioning

confidence: 99%

Characterization and Optimization of the Angle-Dependent Acoustic Absorption of 2D Infinite Periodic Surfaces of Helmholtz Resonators

Garza-Agudelo¹,

Henrı́quez²,

Jeong³

et al. 2023

J. Theor. Comp. Acout.

Self Cite

View full text Add to dashboard Cite

Acoustic metamaterials have emerged as alternative solutions to achieve useful physical effects that differ from the ones obtained with traditional materials. In terms of sound absorption, previous works have addressed their potential as compact surfaces with high performance. Nevertheless, studies on their angle-dependent behavior are scarce. In this work, an analytic model and a numerical model to estimate the performance of periodic surfaces with unit cells composed of 2D Helmholtz resonators are presented. By making use of these modeling tools, the absorption of surfaces with one and three different resonators is studied as a function of both incidence angle and frequency. Changes in the incidence angle can cause variation of the maximum absorption coefficient, the frequencies at which the maximum performance is observed, and the frequency range of significant absorption. Furthermore, the rate at which the performance changes as a function of the incidence angle is larger as the angle increases. Given the angle dependency of these absorbers, a strategy to optimize the dimensions of the surface elements to maximize the absorption performance for predefined ranges of incidence angles and frequencies is presented.

show abstract

Section: Introductionmentioning

confidence: 99%

Characterization and Optimization of the Angle-Dependent Acoustic Absorption of 2D Infinite Periodic Surfaces of Helmholtz Resonators

Garza-Agudelo¹,

Henrı́quez²,

Jeong³

et al. 2023

J. Theor. Comp. Acout.

Self Cite

View full text Add to dashboard Cite

show abstract

Improved analytical solutions using optimized basis functions for the large deflection problem of rectangular membranes subjected to pressure load

Jung,

Shin,

Lee

et al. 2024

J Mech Sci Technol

View full text Add to dashboard Cite

The effect of ribs on the sound radiation directivity of rectangular plates

et al. 2022

View full text Add to dashboard Cite

An analytical solution utilizing a double finite sine integral transform method is presented in this study for the sound radiation prediction of a ribbed rectangular plate structure under various combinations of clamped and simply supported boundary conditions. An advantage of the modeling method is that the plate-beam structural coupling and the structure-fluid coupling are automatically defined in the integral transformation without the need to manually select the mode shape function. The model is then utilized to investigate the effect of ribs on the radiated sound power and directivity of the plate structure under resonant and non-resonant conditions, respectively. The result shows that the ribbing effect on the omnidirectional radiated sound field of the rectangular plate is consistent with the change of the radiated sound power. However, the radiated sound pressure may increase at certain directions even if the radiated sound power of the rectangular plate is suppressed by the inclusion of ribs. The effect of periodic ribs on the sound radiation of the rectangular plate is also explored. The insights gained from this study can inspire the noise design for structures such as marine platforms and high-speed rail carriages.

show abstract

Optimizing a distribution of resonators on a thin plate for the desired sound radiation

Cited by 5 publications

References 18 publications

Characterization and Optimization of the Angle-Dependent Acoustic Absorption of 2D Infinite Periodic Surfaces of Helmholtz Resonators

Characterization and Optimization of the Angle-Dependent Acoustic Absorption of 2D Infinite Periodic Surfaces of Helmholtz Resonators

Improved analytical solutions using optimized basis functions for the large deflection problem of rectangular membranes subjected to pressure load

The effect of ribs on the sound radiation directivity of rectangular plates

Contact Info

Product

Resources

About