Fracture mechanics of bi-material lattice metamaterials
文献类型：期刊论文
| 作者 | Song, Zhaoqiang3; Wu, Kaijin2; Wang, Zewen2; He, Linghui2; Ni Y(倪勇)1,2 |
| 刊名 | JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 192页码:19 |
| 关键词 | Bi-material lattice metamaterials Fracture energy Toughening mechanism Stretch-bend synergism Additive manufacturing |
| ISSN号 | 0022-5096 |
| DOI | 10.1016/j.jmps.2024.105835 |
| 通讯作者 | Song, Zhaoqiang(zhs084@ucsd.edu) ; Ni, Yong(yni@ustc.edu.cn) |
| 英文摘要 | The advent of additive manufacturing technology empowers precise control of multi-material components or specific defects in lightweight lattice metamaterials, however, fracture mechanics and toughening design strategies in such metamaterials remain enigmatic. By incorporating theoretical analysis, numerical simulation, and experimental investigation, our study reveals that stretch-bend synergistic strut deformations caused by bi-material components or topology defects contribute notably tougher lattice structures surpassing its ideal single-material lattices. A peak fracture energy at a critical modulus ratio was found in a designed bi-material lattice composed of triangular soft struts and hexagonal stiff struts, which originates from the shift of fracture modes at crack tip from strut bending to stretching dominated failure modes as the modulus of soft struts increases, where the compromise in competition between bending-enhanced and stretching-weakened energy dissipations of struts deformations results in the maximized fracture energy. A parametric design protocol was proposed to optimize fracture energy of bi-material lattices through tuning the modulus ratio and relative density. Furthermore, the concept of stretch-bend synergistic toughening can also be applied to make tougher single-material lattices with specific topological defects. Our findings not only provide physical insights into directing crack propagation but also provide quantitative guidance to optimize fracture resistance within low-density tough lattice metamaterials. |
| 分类号 | 一类/力学重要期刊 |
| WOS关键词 | DUCTILE TRANSITION ; BRITTLE |
| 资助项目 | National Key Research and Development Program of China[2022YFA1203602] ; National Natural Science Foundation of China[12025206] ; National Natural Science Foundation of China[12202433] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB0620101] ; USTC Research Funds of the Double First-Class Initiative[YD2090002010] |
| WOS研究方向 | Materials Science ; Mechanics ; Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:001315826400001 |
| 资助机构 | National Key Research and Development Program of China ; National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; USTC Research Funds of the Double First-Class Initiative |
| 其他责任者 | Song, Zhaoqiang ; Ni, Yong |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/96703]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, 15 Beisihuan West Rd, Beijing 100190, Peoples R China 2.Univ Sci & Technol China, Dept Modern Mech, CAS Key Lab Mech Behav & Design Mat, Hefei 230026, Anhui, Peoples R China; 3.Univ Calif San Diego, Dept Mech & Aerosp Engn, La Jolla, CA 92093 USA; |
| 推荐引用方式 GB/T 7714 | Song, Zhaoqiang,Wu, Kaijin,Wang, Zewen,et al. Fracture mechanics of bi-material lattice metamaterials[J]. JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,2024,192:19. |
| APA | Song, Zhaoqiang,Wu, Kaijin,Wang, Zewen,He, Linghui,&倪勇.(2024).Fracture mechanics of bi-material lattice metamaterials.JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS,192,19. |
| MLA | Song, Zhaoqiang,et al."Fracture mechanics of bi-material lattice metamaterials".JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS 192(2024):19. |
入库方式： OAI收割
来源：力学研究所
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