Negative stiffness mechanical metamaterials based on curved beams for reusable shock isolation
Previous studies on negative stiffness mechanical metamaterials have mainly focused on their quasi-static mechanical properties, while studies on their dynamic mechanical properties are relatively scarce. As energy-absorbing materials, the energy absorption mechanism of negative stiffness metamateri...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2025-04-01
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| Series: | International Journal of Smart and Nano Materials |
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| Online Access: | https://www.tandfonline.com/doi/10.1080/19475411.2025.2506645 |
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| author | Shuai Chen Xu Lian Xin Liu Jiqiang Hu Bing Wang Jie Xu Linzhi Wu |
| author_facet | Shuai Chen Xu Lian Xin Liu Jiqiang Hu Bing Wang Jie Xu Linzhi Wu |
| author_sort | Shuai Chen |
| collection | DOAJ |
| description | Previous studies on negative stiffness mechanical metamaterials have mainly focused on their quasi-static mechanical properties, while studies on their dynamic mechanical properties are relatively scarce. As energy-absorbing materials, the energy absorption mechanism of negative stiffness metamaterials differs from that of traditional materials, which rely on viscoelastic effects, plastic deformation, or fracture damage. In the process of energy absorption, negative stiffness metamaterials can convert external input mechanical energy into structure strain energy, so they can provide good protection against external impact objects during dynamic impact. This paper aims to comprehensively and systematically study the general law of the buffering behavior of negative stiffness metamaterials based on curved beams through the design of buffering experiments and the establishment of an evaluation scheme for buffering performance, reveal its buffering mechanism under dynamic loads, and evaluate the effects of different geometric parameters for curved beam units and series unit cell number on metamaterial buffering performance. The results show that the proposed negative stiffness metamaterial based on curved beam exhibits good energy absorption capacity under quasi-static loading and excellent buffering capability under dynamic impact loads. Moreover, it only undergoes elastic deformation during the deformation process and is reusable. |
| format | Article |
| id | doaj-art-a0e08fa35bed42acaabab82620cc3713 |
| institution | Kabale University |
| issn | 1947-5411 1947-542X |
| language | English |
| publishDate | 2025-04-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | International Journal of Smart and Nano Materials |
| spelling | doaj-art-a0e08fa35bed42acaabab82620cc37132025-08-20T03:26:38ZengTaylor & Francis GroupInternational Journal of Smart and Nano Materials1947-54111947-542X2025-04-0116239741810.1080/19475411.2025.2506645Negative stiffness mechanical metamaterials based on curved beams for reusable shock isolationShuai Chen0Xu Lian1Xin Liu2Jiqiang Hu3Bing Wang4Jie Xu5Linzhi Wu6School of’ Materials Science and Engineering, Harbin Institute of Technology, Harbin, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, ChinaSchool of’ Materials Science and Engineering, Harbin Institute of Technology, Harbin, ChinaNational Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin, ChinaPrevious studies on negative stiffness mechanical metamaterials have mainly focused on their quasi-static mechanical properties, while studies on their dynamic mechanical properties are relatively scarce. As energy-absorbing materials, the energy absorption mechanism of negative stiffness metamaterials differs from that of traditional materials, which rely on viscoelastic effects, plastic deformation, or fracture damage. In the process of energy absorption, negative stiffness metamaterials can convert external input mechanical energy into structure strain energy, so they can provide good protection against external impact objects during dynamic impact. This paper aims to comprehensively and systematically study the general law of the buffering behavior of negative stiffness metamaterials based on curved beams through the design of buffering experiments and the establishment of an evaluation scheme for buffering performance, reveal its buffering mechanism under dynamic loads, and evaluate the effects of different geometric parameters for curved beam units and series unit cell number on metamaterial buffering performance. The results show that the proposed negative stiffness metamaterial based on curved beam exhibits good energy absorption capacity under quasi-static loading and excellent buffering capability under dynamic impact loads. Moreover, it only undergoes elastic deformation during the deformation process and is reusable.https://www.tandfonline.com/doi/10.1080/19475411.2025.2506645Curved beamshock isolationenergy absorptionnegative stiffness |
| spellingShingle | Shuai Chen Xu Lian Xin Liu Jiqiang Hu Bing Wang Jie Xu Linzhi Wu Negative stiffness mechanical metamaterials based on curved beams for reusable shock isolation International Journal of Smart and Nano Materials Curved beam shock isolation energy absorption negative stiffness |
| title | Negative stiffness mechanical metamaterials based on curved beams for reusable shock isolation |
| title_full | Negative stiffness mechanical metamaterials based on curved beams for reusable shock isolation |
| title_fullStr | Negative stiffness mechanical metamaterials based on curved beams for reusable shock isolation |
| title_full_unstemmed | Negative stiffness mechanical metamaterials based on curved beams for reusable shock isolation |
| title_short | Negative stiffness mechanical metamaterials based on curved beams for reusable shock isolation |
| title_sort | negative stiffness mechanical metamaterials based on curved beams for reusable shock isolation |
| topic | Curved beam shock isolation energy absorption negative stiffness |
| url | https://www.tandfonline.com/doi/10.1080/19475411.2025.2506645 |
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