Sound transmission through a sandwich structure with two-layered pyramidal core and cavity absorption

Wang, Dongwei; Ma, Li; Wen, Zhihui

doi:10.1016/j.jsv.2019.114853

Cited by 28 publications

(15 citation statements)

References 47 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The inspection of the acoustic property of double-wall plates was also followed by Wang et al. [215]. In their approach, they modeled a structure composed of the two-layered pyramidal core and fibrous material.…”

Section: Environmental Characteristicsmentioning

confidence: 99%

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

View full text Add to dashboard Cite

This study collects all of the existent papers in the field of acoustic transmission across multilayered plate constructions. Herewith, a comprehensive source is proposed wherein approximately 410 references are reviewed and described from the first [Formula: see text] to [Formula: see text]. In the first part, in addition to the presentation of a complete explanation about the importance of the acoustic analysis of these structures, appropriate formulations are also provided. Furthermore, an overview of the thematic correspondent is carried out. Since the type of material used in these constructions can be very important in sound insulation, the significance of this subject is remarked. The papers are then classified based on their acoustic excitation fields containing plane wave, diffuse, random, and point source. After analyzing the research approaches according to different environmental properties, the articles are ordered based on their boundaries as finite and infinite. To present reliable outcomes, it is necessary to investigate a proper theory proportional to the structure’s thickness. Herewith, this issue is also discussed in detail. The review is also expanded to focus on the different vibroacoustic solutions. Before concluding remarks, the authors' research works are presented wherein either optimization algorithms or control techniques improve the acoustic performance of these structures.

show abstract

Section: Environmental Characteristicsmentioning

confidence: 99%

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

View full text Add to dashboard Cite

show abstract

“…-Frequency at which the double panels vibrates on the stiffness of the separating air layer. [31,32] Ring…”

Section: Symbol Formula Definition Referencementioning

confidence: 99%

“…For example, it was shown that at an incident angle of 0 • , the STL of the pyramidal truss core produced higher results than when incident angles of 30 • , 45 • and 60 • were used. In recent time, Wang et al [31] also developed theoretical model to predict the STL of sandwich structures whose pyramidal truss core are made of two layers and with fiberglass subjected to external mean flow. The influence of various Mach numbers of the external mean flow along the downstream and upstream directions on the STL was compared.…”

Section: Sandwich Core Support Structuresmentioning

confidence: 99%

Comparative Study of Sound Transmission Losses of Sandwich Composite Double Panel Walls

2020

View full text Add to dashboard Cite

The increasing motivation behind the recently wide industrial applications of sandwich and composite double panel structures stems from their ability to absorb sounds more effectively. Meticulous selection of the geometrical and material constituents of both the core and panels of these structures can produce highly desirable properties. A good understanding of their vibro-acoustic response and emission index such as the sound transmission loss (STL) is, therefore, a requisite to producing optimal design. In this study, an overview of recent advances in STL of sandwich and composites double panels is presented. At first, some salient explanation of the various frequency and controlled regions are given. It then critically examines a number of parameter effects on the STL of sandwich and composite structures. Literatures on the numerical, analytical and experimental solutions of STL are systematically presented. Efficient and more reliable optimization problems that maximize the STL and minimize the objective functions capable of degrading the effectiveness of the structure to absorb sounds are also provided.

show abstract

“…Wang [17] used the equivalent model to investigate sound transmission of pyramidal sandwich structure with porous material. This approach is easily used but can not match Biot theory [11] in accuracy and applicability.…”

Section: Introductionmentioning

confidence: 99%

“…Equivalent theory of porous material in the previous studies is less accurate and not applicable for non-full filled configurations. In previous work [17], we have calculated the transmission loss of two-layered pyramidal structure filled with porous material using the EFM. In the present contribution, we elaborate and refine this by modeling using the Biot theory.…”

Section: Introductionmentioning

confidence: 99%

Sound Transmission Loss of a Two-Layered Pyramidal Structure Lined with Porous Material

Wang

Wen

et al. 2021

AIAA Journal

Self Cite

View full text Add to dashboard Cite

A theoretical model is presented that allows to calculate the sound transmission loss of twolayered pyramidal lattice sandwich structure lined with poroelastic material in the presence of external stationary flow. An approach that decomposes the sound field in spacial harmonics is adopted to describe the wave propagation in the structure with periodic cores, while Biot theory is applied to model the porous material. Acoustic-vibrational systems with different types of filling configurations of porous material are derived and solved numerically. The model results are validated by comparison with finite element simulations and results in literature. The influence of the porous material parameters, the external flow and the lattice structure are discussed. Conclusions are drawn the physical mechanisms that determine the acoustic insulation performance of the multifunctional structure, which are helpful for practical design.

show abstract

Sound transmission through a sandwich structure with two-layered pyramidal core and cavity absorption

Cited by 28 publications

References 47 publications

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Prediction of acoustic wave transmission features of the multilayered plate constructions: A review

Comparative Study of Sound Transmission Losses of Sandwich Composite Double Panel Walls

Sound Transmission Loss of a Two-Layered Pyramidal Structure Lined with Porous Material

Contact Info

Product

Resources

About