Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated Panel
The combination structure of a porous metal and microperforated panel was optimized to develop a low frequency sound absorber. Theoretical models were constructed by the transfer matrix method based on the Johnson—Champoux—Allard model and Maa’s theory. Parameter optimi...
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doaj-d619eed600aa478894f01703fea46c222020-11-24T22:15:48ZengMDPI AGApplied Sciences2076-34172019-04-0197150710.3390/app9071507app9071507Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated PanelXinmin Shen0Panfeng Bai1Xiaocui Yang2Xiaonan Zhang3Sandy To4State Key Laboratory in Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR 999077, ChinaDepartment of Mechanical Engineering, College of Field Engineering, Army Engineering University, No. 1 Haifu Street, Nanjing 210007, Jiangsu, ChinaDepartment of Mechanical Engineering, College of Field Engineering, Army Engineering University, No. 1 Haifu Street, Nanjing 210007, Jiangsu, ChinaDepartment of Mechanical Engineering, College of Field Engineering, Army Engineering University, No. 1 Haifu Street, Nanjing 210007, Jiangsu, ChinaState Key Laboratory in Ultra-Precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hong Kong SAR 999077, ChinaThe combination structure of a porous metal and microperforated panel was optimized to develop a low frequency sound absorber. Theoretical models were constructed by the transfer matrix method based on the Johnson—Champoux—Allard model and Maa’s theory. Parameter optimizations of the sound absorbers were conducted by Cuckoo search algorithm. The sound absorption coefficients of the combination structures were verified by finite element simulation and validated by standing wave tube measurement. The experimental data was consistent with the theoretical and simulation data, which proved the efficiency, reliability, and accuracy of the constructed theoretical sound absorption model and finite element model. The actual average sound absorption coefficient of the microperforated panel + cavity + porous metal + cavity sound absorber in the 100–1800 Hz range reached 62.9615% and 73.5923%, respectively, when the limited total thickness was 30 mm and 50 mm. The excellent low frequency sound absorbers obtained can be used in the fields of acoustic environmental protection and industrial noise reduction.https://www.mdpi.com/2076-3417/9/7/1507low frequency sound absorptioncombination structureporous metalmicroperforated panelparameter optimizationfinite element simulationexperimental validation |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Xinmin Shen Panfeng Bai Xiaocui Yang Xiaonan Zhang Sandy To |
spellingShingle |
Xinmin Shen Panfeng Bai Xiaocui Yang Xiaonan Zhang Sandy To Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated Panel Applied Sciences low frequency sound absorption combination structure porous metal microperforated panel parameter optimization finite element simulation experimental validation |
author_facet |
Xinmin Shen Panfeng Bai Xiaocui Yang Xiaonan Zhang Sandy To |
author_sort |
Xinmin Shen |
title |
Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated Panel |
title_short |
Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated Panel |
title_full |
Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated Panel |
title_fullStr |
Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated Panel |
title_full_unstemmed |
Low Frequency Sound Absorption by Optimal Combination Structure of Porous Metal and Microperforated Panel |
title_sort |
low frequency sound absorption by optimal combination structure of porous metal and microperforated panel |
publisher |
MDPI AG |
series |
Applied Sciences |
issn |
2076-3417 |
publishDate |
2019-04-01 |
description |
The combination structure of a porous metal and microperforated panel was optimized to develop a low frequency sound absorber. Theoretical models were constructed by the transfer matrix method based on the Johnson—Champoux—Allard model and Maa’s theory. Parameter optimizations of the sound absorbers were conducted by Cuckoo search algorithm. The sound absorption coefficients of the combination structures were verified by finite element simulation and validated by standing wave tube measurement. The experimental data was consistent with the theoretical and simulation data, which proved the efficiency, reliability, and accuracy of the constructed theoretical sound absorption model and finite element model. The actual average sound absorption coefficient of the microperforated panel + cavity + porous metal + cavity sound absorber in the 100–1800 Hz range reached 62.9615% and 73.5923%, respectively, when the limited total thickness was 30 mm and 50 mm. The excellent low frequency sound absorbers obtained can be used in the fields of acoustic environmental protection and industrial noise reduction. |
topic |
low frequency sound absorption combination structure porous metal microperforated panel parameter optimization finite element simulation experimental validation |
url |
https://www.mdpi.com/2076-3417/9/7/1507 |
work_keys_str_mv |
AT xinminshen lowfrequencysoundabsorptionbyoptimalcombinationstructureofporousmetalandmicroperforatedpanel AT panfengbai lowfrequencysoundabsorptionbyoptimalcombinationstructureofporousmetalandmicroperforatedpanel AT xiaocuiyang lowfrequencysoundabsorptionbyoptimalcombinationstructureofporousmetalandmicroperforatedpanel AT xiaonanzhang lowfrequencysoundabsorptionbyoptimalcombinationstructureofporousmetalandmicroperforatedpanel AT sandyto lowfrequencysoundabsorptionbyoptimalcombinationstructureofporousmetalandmicroperforatedpanel |
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1725793042575654912 |