Lightweight cellular multifunctional metamaterials with superior low-frequency sound absorption, broadband energy harvesting and high load-bearing capacity
Multifunctional materials are highly desired for the design of compact engineering structures, such as aircraft where weight reduction, sound absorption, load carrying, and energy harvesting are key considerations. However, design challenge remains in the balance of multiple functionalities. Here, w...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2024-05-01
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| Series: | Materials & Design |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S0264127524002855 |
| _version_ | 1797220581837373440 |
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| author | Zhenqian Xiao Penglin Gao Xiao He Yegao Qu Linzhi Wu |
| author_facet | Zhenqian Xiao Penglin Gao Xiao He Yegao Qu Linzhi Wu |
| author_sort | Zhenqian Xiao |
| collection | DOAJ |
| description | Multifunctional materials are highly desired for the design of compact engineering structures, such as aircraft where weight reduction, sound absorption, load carrying, and energy harvesting are key considerations. However, design challenge remains in the balance of multiple functionalities. Here, we combine the sandwich structure with the neck-embedded cavities to design a cellular metamaterial having sound-absorption, compression/impact resistance and energy harvesting functionalities. For sound absorption, an autoencoder-like neural network is constructed to generate an instant design, after which a probabilistic module is inserted to optimize it by searching solutions in a slightly expanded design space. This inverse design has been experimentally validated, showing broadband sound absorption from 400 to 650 Hz merely with nine ultra-thin resonators. Beyond serving as absorber, the resonant cavities, once installed with well-tuned piezoelectric membranes, can gather broadband acoustic energy at low frequencies. Additionally, the cellular metamaterial inherits the excellent mechanical properties of honeycomb cores, having a low density of 0.64 g/cm3 yet displaying a high yield strength (21.2 MPa) in out-of-plane compression test and a superior energy absorption capability (8.6 J/cm3) in low-velocity impact tests. This work presents an effective approach to design lightweight metamaterials of superior mechanical and acoustic functionalities highly sought-after in practical engineering. |
| first_indexed | 2024-04-24T12:51:49Z |
| format | Article |
| id | doaj.art-1c2fa52ee647490195095b39347b383f |
| institution | Directory Open Access Journal |
| issn | 0264-1275 |
| language | English |
| last_indexed | 2024-04-24T12:51:49Z |
| publishDate | 2024-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Materials & Design |
| spelling | doaj.art-1c2fa52ee647490195095b39347b383f2024-04-06T04:39:23ZengElsevierMaterials & Design0264-12752024-05-01241112912Lightweight cellular multifunctional metamaterials with superior low-frequency sound absorption, broadband energy harvesting and high load-bearing capacityZhenqian Xiao0Penglin Gao1Xiao He2Yegao Qu3Linzhi Wu4Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, ChinaState Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 20024, China; Institute of Vibration, Shock and Noise, Shanghai Jiao Tong University, Shanghai 200240, China; Corresponding authors at: State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 20024, China (P. Gao). Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, China (L. Wu).Key Laboratory of Advanced Ship Materials and Mechanics, College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, ChinaState Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 20024, China; Institute of Vibration, Shock and Noise, Shanghai Jiao Tong University, Shanghai 200240, ChinaCenter for Composite Materials, Harbin Institute of Technology, Harbin 150001, China; Key Laboratory of Advanced Ship Materials and Mechanics, College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, China; Corresponding authors at: State Key Laboratory of Mechanical System and Vibration, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai 20024, China (P. Gao). Center for Composite Materials, Harbin Institute of Technology, Harbin 150001, China (L. Wu).Multifunctional materials are highly desired for the design of compact engineering structures, such as aircraft where weight reduction, sound absorption, load carrying, and energy harvesting are key considerations. However, design challenge remains in the balance of multiple functionalities. Here, we combine the sandwich structure with the neck-embedded cavities to design a cellular metamaterial having sound-absorption, compression/impact resistance and energy harvesting functionalities. For sound absorption, an autoencoder-like neural network is constructed to generate an instant design, after which a probabilistic module is inserted to optimize it by searching solutions in a slightly expanded design space. This inverse design has been experimentally validated, showing broadband sound absorption from 400 to 650 Hz merely with nine ultra-thin resonators. Beyond serving as absorber, the resonant cavities, once installed with well-tuned piezoelectric membranes, can gather broadband acoustic energy at low frequencies. Additionally, the cellular metamaterial inherits the excellent mechanical properties of honeycomb cores, having a low density of 0.64 g/cm3 yet displaying a high yield strength (21.2 MPa) in out-of-plane compression test and a superior energy absorption capability (8.6 J/cm3) in low-velocity impact tests. This work presents an effective approach to design lightweight metamaterials of superior mechanical and acoustic functionalities highly sought-after in practical engineering.http://www.sciencedirect.com/science/article/pii/S0264127524002855Lightweight multifunctional metamaterialsSound absorberAcoustic energy harvestingCompression/impact resistanceDeep learning approach |
| spellingShingle | Zhenqian Xiao Penglin Gao Xiao He Yegao Qu Linzhi Wu Lightweight cellular multifunctional metamaterials with superior low-frequency sound absorption, broadband energy harvesting and high load-bearing capacity Materials & Design Lightweight multifunctional metamaterials Sound absorber Acoustic energy harvesting Compression/impact resistance Deep learning approach |
| title | Lightweight cellular multifunctional metamaterials with superior low-frequency sound absorption, broadband energy harvesting and high load-bearing capacity |
| title_full | Lightweight cellular multifunctional metamaterials with superior low-frequency sound absorption, broadband energy harvesting and high load-bearing capacity |
| title_fullStr | Lightweight cellular multifunctional metamaterials with superior low-frequency sound absorption, broadband energy harvesting and high load-bearing capacity |
| title_full_unstemmed | Lightweight cellular multifunctional metamaterials with superior low-frequency sound absorption, broadband energy harvesting and high load-bearing capacity |
| title_short | Lightweight cellular multifunctional metamaterials with superior low-frequency sound absorption, broadband energy harvesting and high load-bearing capacity |
| title_sort | lightweight cellular multifunctional metamaterials with superior low frequency sound absorption broadband energy harvesting and high load bearing capacity |
| topic | Lightweight multifunctional metamaterials Sound absorber Acoustic energy harvesting Compression/impact resistance Deep learning approach |
| url | http://www.sciencedirect.com/science/article/pii/S0264127524002855 |
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