Numerical Optimization of Microperforated panel Absorbers: The Impact of Series-Parallel Configuration, Air Gap, and Porous Materials on the Sound Absorption Bandwidth
Introduction: Micro-perforated panel (MPP) absorbers are emerging as next-generation absorbers due to their considerable advantages. However, their main drawback compared to other absorbers is their limited bandwidth. This study aims to investigate methods for enhancing the bandwidth of an MPP in th...
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Tehran University of Medical Sciences
2024-12-01
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| Series: | بهداشت و ایمنی کار |
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| Online Access: | http://jhsw.tums.ac.ir/article-1-7085-en.pdf |
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| author | Mohammad Javad SheikhMozafari Zahra Hashemi Ali Mohsenian |
| author_facet | Mohammad Javad SheikhMozafari Zahra Hashemi Ali Mohsenian |
| author_sort | Mohammad Javad SheikhMozafari |
| collection | DOAJ |
| description | Introduction: Micro-perforated panel (MPP) absorbers are emerging as next-generation absorbers due to their considerable advantages. However, their main drawback compared to other absorbers is their limited bandwidth. This study aims to investigate methods for enhancing the bandwidth of an MPP in the frequency range of 1 to 1500 Hz through simulation using the Finite Element Analysis (FEA) in COMSOL software.
Material and Methods: The modeling was conducted using FEA in COMSOL version 5.3a. To increase the bandwidth, techniques such as series-parallel configurations, symmetrical and asymmetrical air gap depths, and the incorporation of two porous absorbing materials in symmetric and asymmetric air gap layers were employed. In the initial phase, the best configuration was selected and retained for the subsequent stages.
Results: The optimal arrangement involved two upper MPPs having larger holes and a lower perforation percentage compared to the two lower MPPs. It was also found that increasing the depth difference between the air layers of the upper and lower MPPs led to a greater increase in bandwidth than when they were closer together. Furthermore, the use of fibrous porous materials in one of the layers resulted in a reduction of resonance peak while enhancing the bandwidth.
Conclusion: MPP absorbers exhibit diverse behaviors due to their Helmholtz structure and parametric design. If their constituent parameters are tailored to match the acoustic characteristics of the target sound, they achieve optimal efficiency. Additionally, employing numerical methods such as FEA serves as a suitable alternative to more costly laboratory methods. |
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| institution | Kabale University |
| issn | 2251-807X 2383-2088 |
| language | fas |
| publishDate | 2024-12-01 |
| publisher | Tehran University of Medical Sciences |
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| series | بهداشت و ایمنی کار |
| spelling | doaj-art-edfe06a353ab44018912dfd3676e9ed42025-01-06T08:45:26ZfasTehran University of Medical Sciencesبهداشت و ایمنی کار2251-807X2383-20882024-12-01144772795Numerical Optimization of Microperforated panel Absorbers: The Impact of Series-Parallel Configuration, Air Gap, and Porous Materials on the Sound Absorption BandwidthMohammad Javad SheikhMozafari0Zahra Hashemi1Ali Mohsenian2 Department of Occupational Health Engineering, School of Public Health, Tehran University of Medical Sciences, Tehran, Iran Department of Occupational Health Engineering, School of Medical Sciences, Behbahan Faculty of Medical Sciences, Behbahan, Iran Department of Occupational Health and Safety Engineering, School of Health, Shiraz University of Medical Sciences, Shiraz, Iran Introduction: Micro-perforated panel (MPP) absorbers are emerging as next-generation absorbers due to their considerable advantages. However, their main drawback compared to other absorbers is their limited bandwidth. This study aims to investigate methods for enhancing the bandwidth of an MPP in the frequency range of 1 to 1500 Hz through simulation using the Finite Element Analysis (FEA) in COMSOL software. Material and Methods: The modeling was conducted using FEA in COMSOL version 5.3a. To increase the bandwidth, techniques such as series-parallel configurations, symmetrical and asymmetrical air gap depths, and the incorporation of two porous absorbing materials in symmetric and asymmetric air gap layers were employed. In the initial phase, the best configuration was selected and retained for the subsequent stages. Results: The optimal arrangement involved two upper MPPs having larger holes and a lower perforation percentage compared to the two lower MPPs. It was also found that increasing the depth difference between the air layers of the upper and lower MPPs led to a greater increase in bandwidth than when they were closer together. Furthermore, the use of fibrous porous materials in one of the layers resulted in a reduction of resonance peak while enhancing the bandwidth. Conclusion: MPP absorbers exhibit diverse behaviors due to their Helmholtz structure and parametric design. If their constituent parameters are tailored to match the acoustic characteristics of the target sound, they achieve optimal efficiency. Additionally, employing numerical methods such as FEA serves as a suitable alternative to more costly laboratory methods.http://jhsw.tums.ac.ir/article-1-7085-en.pdfmicro-perforated panelfinite element numerical methodbandwidth increase |
| spellingShingle | Mohammad Javad SheikhMozafari Zahra Hashemi Ali Mohsenian Numerical Optimization of Microperforated panel Absorbers: The Impact of Series-Parallel Configuration, Air Gap, and Porous Materials on the Sound Absorption Bandwidth بهداشت و ایمنی کار micro-perforated panel finite element numerical method bandwidth increase |
| title | Numerical Optimization of Microperforated panel Absorbers: The Impact of Series-Parallel Configuration, Air Gap, and Porous Materials on the Sound Absorption Bandwidth |
| title_full | Numerical Optimization of Microperforated panel Absorbers: The Impact of Series-Parallel Configuration, Air Gap, and Porous Materials on the Sound Absorption Bandwidth |
| title_fullStr | Numerical Optimization of Microperforated panel Absorbers: The Impact of Series-Parallel Configuration, Air Gap, and Porous Materials on the Sound Absorption Bandwidth |
| title_full_unstemmed | Numerical Optimization of Microperforated panel Absorbers: The Impact of Series-Parallel Configuration, Air Gap, and Porous Materials on the Sound Absorption Bandwidth |
| title_short | Numerical Optimization of Microperforated panel Absorbers: The Impact of Series-Parallel Configuration, Air Gap, and Porous Materials on the Sound Absorption Bandwidth |
| title_sort | numerical optimization of microperforated panel absorbers the impact of series parallel configuration air gap and porous materials on the sound absorption bandwidth |
| topic | micro-perforated panel finite element numerical method bandwidth increase |
| url | http://jhsw.tums.ac.ir/article-1-7085-en.pdf |
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