Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials
Abstract In practical engineering, noise and impact hazards are pervasive, indicating the pressing demand for materials that can absorb both sound and stress wave energy simultaneously. However, the rational design of such multifunctional materials remains a challenge. Herein, inspired by cuttlebone...
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2024-09-01
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| Series: | NPG Asia Materials |
| Online Access: | https://doi.org/10.1038/s41427-024-00565-5 |
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| author | Zhendong Li Xinxin Wang Kexin Zeng Zichao Guo Chong Li Xiang Yu Seeram Ramakrishna Zhonggang Wang Yang Lu |
| author_facet | Zhendong Li Xinxin Wang Kexin Zeng Zichao Guo Chong Li Xiang Yu Seeram Ramakrishna Zhonggang Wang Yang Lu |
| author_sort | Zhendong Li |
| collection | DOAJ |
| description | Abstract In practical engineering, noise and impact hazards are pervasive, indicating the pressing demand for materials that can absorb both sound and stress wave energy simultaneously. However, the rational design of such multifunctional materials remains a challenge. Herein, inspired by cuttlebone, we present bioinspired architected metamaterials with unprecedented sound-absorbing and mechanical properties engineered via a weakly-coupled design. The acoustic elements feature heterogeneous multilayered resonators, whereas the mechanical responses are based on asymmetric cambered cell walls. These metamaterials experimentally demonstrated an average absorption coefficient of 0.80 from 1.0 to 6.0 kHz, with 77% of the data points exceeding the desired 0.75 threshold, all with a compact 21 mm thickness. An absorptance-thickness map is devised for assessing the sound-absorption efficiency. The high-fidelity microstructure-based model reveals the air friction damping mechanism, with broadband behavior attributed to multimodal hybrid resonance. Empowered by the cambered design of cell walls, metamaterials shift catastrophic failure toward a progressive deformation mode characterized by stable stress plateaus and ultrahigh specific energy absorption of 50.7 J/g—a 558.4% increase over the straight-wall design. After the deformation mechanisms are elucidated, a comprehensive research framework for burgeoning acousto-mechanical metamaterials is proposed. Overall, our study broadens the horizon for multifunctional material design. |
| format | Article |
| id | doaj-art-bedf649c6e1043fd99ceca1ed6e507a2 |
| institution | Kabale University |
| issn | 1884-4057 |
| language | English |
| publishDate | 2024-09-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | NPG Asia Materials |
| spelling | doaj-art-bedf649c6e1043fd99ceca1ed6e507a22025-01-19T12:28:53ZengNature PortfolioNPG Asia Materials1884-40572024-09-0116111410.1038/s41427-024-00565-5Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterialsZhendong Li0Xinxin Wang1Kexin Zeng2Zichao Guo3Chong Li4Xiang Yu5Seeram Ramakrishna6Zhonggang Wang7Yang Lu8School of Traffic & Transportation Engineering, Central South UniversitySchool of Traffic & Transportation Engineering, Central South UniversitySchool of Traffic & Transportation Engineering, Central South UniversitySchool of Traffic & Transportation Engineering, Central South UniversityDepartment of Mechanical Engineering, The University of Hong KongDepartment of Mechanical Engineering, The Hong Kong Polytechnic UniversityCenter for Nanofibers and Nanotechnology, Department of Mechanical Engineering, National University of SingaporeSchool of Traffic & Transportation Engineering, Central South UniversityDepartment of Mechanical Engineering, The University of Hong KongAbstract In practical engineering, noise and impact hazards are pervasive, indicating the pressing demand for materials that can absorb both sound and stress wave energy simultaneously. However, the rational design of such multifunctional materials remains a challenge. Herein, inspired by cuttlebone, we present bioinspired architected metamaterials with unprecedented sound-absorbing and mechanical properties engineered via a weakly-coupled design. The acoustic elements feature heterogeneous multilayered resonators, whereas the mechanical responses are based on asymmetric cambered cell walls. These metamaterials experimentally demonstrated an average absorption coefficient of 0.80 from 1.0 to 6.0 kHz, with 77% of the data points exceeding the desired 0.75 threshold, all with a compact 21 mm thickness. An absorptance-thickness map is devised for assessing the sound-absorption efficiency. The high-fidelity microstructure-based model reveals the air friction damping mechanism, with broadband behavior attributed to multimodal hybrid resonance. Empowered by the cambered design of cell walls, metamaterials shift catastrophic failure toward a progressive deformation mode characterized by stable stress plateaus and ultrahigh specific energy absorption of 50.7 J/g—a 558.4% increase over the straight-wall design. After the deformation mechanisms are elucidated, a comprehensive research framework for burgeoning acousto-mechanical metamaterials is proposed. Overall, our study broadens the horizon for multifunctional material design.https://doi.org/10.1038/s41427-024-00565-5 |
| spellingShingle | Zhendong Li Xinxin Wang Kexin Zeng Zichao Guo Chong Li Xiang Yu Seeram Ramakrishna Zhonggang Wang Yang Lu Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials NPG Asia Materials |
| title | Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials |
| title_full | Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials |
| title_fullStr | Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials |
| title_full_unstemmed | Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials |
| title_short | Unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials |
| title_sort | unprecedented mechanical wave energy absorption observed in multifunctional bioinspired architected metamaterials |
| url | https://doi.org/10.1038/s41427-024-00565-5 |
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