Sound transmission loss of plate-type metastructures: Semi-analytical modeling, elaborate analysis, and experimental validation

Xiao, Yong; Cao, Jianzhi; Wang, Shuaixing; Guo, Jiajia; Wen, Jihong; Zhang, Hao

doi:10.1016/j.ymssp.2020.107487

Cited by 43 publications

(9 citation statements)

References 23 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…According to the reference [27,28], the sound insulation performance of materials is determined by comparing with the mass law curve. The drawing of the mass law curve needs to be obtained by calculating the static surface mass density m st of metamaterial, as shown in equation (7).…”

Section: Implementation Of Genetic Algorithmmentioning

confidence: 99%

See 1 more Smart Citation

Sound insulation performance of membrane-type acoustic metamaterial based on defect state structure

Cai,

Huang,

Guo

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

Although conventional Membrane-type Acoustic Metamaterial(MAM) has good sound insulation performance in low frequency bands, the sound insulation performance in middle and high frequency bands is not as good as conventional sound insulation materials with the same quality. This problem still persists by using the double-layer MAM structures. To solve this problem, the defect state is introduced into the double-layer MAM structure. Although the ideal periodic structure is destroyed, the sound insulation performance will also change greatly, and it has a strong creativity. In this paper, the sound insulation performance of MAM with defect states is studied. Firstly, the theoretical model of sound insulation of double-layer membrane-type acoustic metamaterial with eccentric mass block (MAMEM)structure is calculated by using modal superposition method and transfer matrix method. Secondly, the influence of different defect locations on the sound insulation of MAMECM structure is discussed. The results show that the sound insulation peaks of the angular defect structure appear at 300Hz, 320Hz, 1040Hz and 1410Hz. The average sound insulation in the whole study frequency band of the angular defect structure is 4.23dB higher than the non-defect structure. In addition, the experiment verifies the accuracy of the results. Thirdly, based on genetic algorithm, the area enclosed by the sound translation loss (STL) curve of the double-layer membrane-type acoustic metamaterial with eccentric composite mass block(MAMECM) structure above the mass law curve is taken as the optimization target to optimize the structure topology. The results show that the optimal structure not only has good sound insulation performance in the low frequency band, but also reaches the sound insulation peak at 1230Hz, 1300Hz, 1430Hz and 1450Hz. Besides, the optimal structure quality is reduced by 12%.

show abstract

Section: Implementation Of Genetic Algorithmmentioning

confidence: 99%

“…Compared with traditional sound insulation materials, acoustic metamaterials have great potential in reducing noise propagation [1]. Common metamaterials include plate metamaterials [2,3] and honeycomb metamaterials [4], which can be used for air and underwater sound insulation [5].…”

Section: Introductionmentioning

confidence: 99%

Sound insulation performance of membrane-type acoustic metamaterial based on defect state structure

Cai,

Huang,

Guo

et al. 2024

Phys. Scr.

View full text Add to dashboard Cite

show abstract

“…Closely related methods have also been applied to other kinds of metamaterial plates (e.g. (de Melo Filho et al, 2019;Langfeldt and Gleine, 2019b;Xiao et al, 2021Xiao et al, , 2012).…”

Section: B Effective Surface Mass Densitymentioning

confidence: 99%

Plate-type acoustic metamaterials with strip masses

Langfeldt

Gleine

2021

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

Germany a)Plate-type acoustic metamaterials (PAM) consist of a thin plate with periodically added masses. Similar to membrane-type acoustic metamaterials, PAM exhibit antiresonances at low frequencies at which the transmission loss can be much higher than the mass-law without requiring a pretension. Most PAM designs previously investigated in literature require the addition of up to thousands of masses per square meter. This makes manufacturing of such PAM prohibitively expensive for most applications. In this contribution a much simpler PAM design with strip masses is investigated. An analytical model is derived which can be used to estimate the modal properties, effective mass, and oblique incidence sound transmission loss of PAM with strip masses. For high strip masses (compared to the baseplate), this analytical model can be simplified to yield explicit expressions to directly calculate the resonance and anti-resonance frequencies of such PAM. The analytical model is verified using numerical simulations and laboratory measurement results are presented to demonstrate the performance of PAM with strip masses under diffuse field excitation and finite sample size conditions.

show abstract

“…Previous research has demonstrated that PAM can exhibit frequency bands at low frequencies (typically below 1 kHz) with sound transmission loss (STL) values greatly exceeding the STL of a homogeneous wall with the same mass, which is governed by the mass-law (Langfeldt and Gleine, 2019;Xiao et al, 2021). These high STL frequency bands are asso- ciated with the anti-resonances of the PAM, i.e.…”

Section: Introductionmentioning

confidence: 99%

On the validity of periodic boundary conditions for modelling finite plate-type acoustic metamaterials

Langfeldt

2024

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

Plate-type acoustic metamaterials (PAMs) are thin structures that exhibit antiresonances with high sound transmission loss (STL) values, making PAMs a promising new technology for controlling tonal noise in the challenging low-frequency regime. A PAM consists of rigid masses periodically attached to a thin baseplate. The periodicity of PAM can be exploited in simulations, allowing to model only a single unit cell using periodic boundary conditions. This approach essentially represents the PAM as an infinite structure, but real PAM implementations will always be finite and influenced by boundary conditions. In this paper, extensive numerical simulations of different PAM configurations have been performed to study the performance of finite PAM compared to infinite PAM. The results indicate that as the number of unit cells in a finite PAM increase, the STL converges toward that of an infinite PAM. The impact of the finite PAM edge boundary conditions becomes negligible at some point. Based on the numerical results, a simple criterion is proposed to determine a priori how many unit cells are required in a finite PAM design to consider it quasi-infinite. This criterion aids in justifying unit cell models with periodic boundary conditions for efficient design optimizations in practical PAM applications.

show abstract

Sound transmission loss of plate-type metastructures: Semi-analytical modeling, elaborate analysis, and experimental validation

Cited by 43 publications

References 23 publications

Sound insulation performance of membrane-type acoustic metamaterial based on defect state structure

Sound insulation performance of membrane-type acoustic metamaterial based on defect state structure

Plate-type acoustic metamaterials with strip masses

On the validity of periodic boundary conditions for modelling finite plate-type acoustic metamaterials

Contact Info

Product

Resources

About