Efficient numerical evaluation of transmission loss in homogenized acoustic metamaterials for aeronautical application

Cinefra, Maria; D'Amico, Giuseppe; Miguel, A. G. de; Filippi, Matteo; Pagani, Alfonso; Carrera, Erasmo

doi:10.1016/j.apacoust.2020.107253

Cited by 30 publications

(8 citation statements)

References 39 publications

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“…Finite element analysis (FEA) software enables the creation of detailed 3D models of the material, allowing for the simulation of sound propagation. This type of analysis provides valuable information about the material's acoustic properties, including sound velocity and acoustic impedance [38]. The results obtained provide valuable insights for developing these composites in industries such as construction, packaging, and automotive components [39].…”

Section: Introductionmentioning

confidence: 94%

Exploring acoustic properties of banana fiber composites with elastomeric filler through a computational approach

Jayaraman,

Pai,

Rodriguez-Millan

et al. 2024

Mater. Res. Express

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In recent years, there has been a significant increase in the use of natural fibers as reinforcements in composites. This trend is mainly driven by their eco-friendly nature and wide availability. The objective of this research is to explore the extensive potential of combining Banana Fiber with Tyre Rubber Particles (TRP) as elastomeric fillers in natural fiber composites, focusing primarily on their applications in the automotive and aeronautical industries, particularly in terms of acoustic response. To thoroughly investigate the acoustic properties of these innovative composites, numerical simulations were conducted using the Ansys harmonic acoustic analysis module. Experimental testing was also carried out using an impedance tube. A meticulous approach was taken to develop an orthotropic material model using the advanced Ansys 2022 R1\textsuperscript{\tiny\textregistered} Material Designer Module, enabling accurate predictions of the composites' behavior when subjected to various acoustic stimuli which is quite novel. The results obtained from the impedance tube experiments align remarkably well with the numerical simulation outputs, demonstrating the reliability of the numerical model in estimating the transmission loss of composite laminates—a crucial parameter for evaluating acoustic performance. The composite with 15 wt. \% of TRP content displayed the maximum transmission loss.

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Section: Introductionmentioning

confidence: 94%

Exploring acoustic properties of banana fiber composites with elastomeric filler through a computational approach

Jayaraman,

Pai,

Rodriguez-Millan

et al. 2024

Mater. Res. Express

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“…Cinefra et al. [403] employed AMs to attenuate the value of transmitted noise into the aircraft cabin. As a consequence, the results were compared with a classical sandwich panel, and the effectiveness of the applied technique was highlighted in the entire range of frequency.…”

Section: Acoustic Insulation Applicationsmentioning

confidence: 99%

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

Zarastvand

Ghassabi

Talebitooti

2021

Jnl of Sandwich Structures & Materials

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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.

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“…The idea of acoustic metamaterial became popular in the past few decades (Liu et al, 2020). Acoustic metamaterials are used for vibration and noise reduction in the field of industrial application (Shen et al, 2010;Tian et al, 2022;Ji et al, 2022;Cinefra et al, 2020). In the automobile vehicle field, Sangiuliano et al (2022) applied a novel resonant metamaterial to vehicle and realized the reduction of structureborne tire noise.…”

Section: Introductionmentioning

confidence: 99%

Acoustic propagation through a duct metamaterial attached with periodic multi-resonant cavities

Liu

Dong

Wang

et al. 2023

Journal of Vibration and Control

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Presently, noise pollution in ducts is considered seriously, and numerous studies concerning sound absorption in pipes are ongoing globally. Aiming at the difficulty to eliminate the low-frequency noise in pipeline, a multi-resonant cavity duct metamaterial is proposed. The acoustic properties of the metamaterial are calculated using the energy method based on the Hamilton principle and the transfer matrix methodology. The result demonstrates that the duct metamaterial, due to its band gaps and negative bulk modulus, obtains several sound absorption peaks and is advantageous to sound elimination in low frequency. The good acoustic characteristics of the duct metamaterial for sound insulation can be attributed to the plate-cavity interaction. Parametric analysis of the proposed structure is also carried out. This study demonstrates the application prospects of duct metamaterials for multi-frequency sound absorption in engineering practice.

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Efficient numerical evaluation of transmission loss in homogenized acoustic metamaterials for aeronautical application

Cited by 30 publications

References 39 publications

Exploring acoustic properties of banana fiber composites with elastomeric filler through a computational approach

Exploring acoustic properties of banana fiber composites with elastomeric filler through a computational approach

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

Acoustic propagation through a duct metamaterial attached with periodic multi-resonant cavities

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