Superior fracture resistance and topology-induced intrinsic toughening mechanism in 3D shell-based lattice metamaterials
Lattice metamaterials have demonstrated remarkable mechanical properties at low densities. As these architected materials advance toward real-world applications, their tolerance for damage and defects becomes a limiting factor. However, a thorough understanding of the fracture resistance and fractur...
| Main Authors: | , , , , , |
|---|---|
| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2024
|
| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/180506 |
| _version_ | 1826117596142895104 |
|---|---|
| author | Wang, Yujia Wu, Kunlin Zhang, Xuan Li, Xiaoyan Wang, Yifan Gao, Huajian |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Wang, Yujia Wu, Kunlin Zhang, Xuan Li, Xiaoyan Wang, Yifan Gao, Huajian |
| author_sort | Wang, Yujia |
| collection | NTU |
| description | Lattice metamaterials have demonstrated remarkable mechanical properties at low densities. As these architected materials advance toward real-world applications, their tolerance for damage and defects becomes a limiting factor. However, a thorough understanding of the fracture resistance and fracture mechanisms in lattice metamaterials, particularly for the emerging shell-based lattices, has remained elusive. Here, using a combination of in situ fracture experiments and finite element simulations, we show that shell-based lattice metamaterials with Schwarz P minimal surface topology exhibit superior fracture resistance compared to conventional octet truss lattices, with average improvements in initiation toughness up to 150%. This superiority is attributed to the unique shell-based architecture that enables more efficient load transfer and higher energy dissipation through material damage, structural plasticity, and material plasticity. Our study reveals a topology-induced intrinsic toughening mechanism in shell-based lattices and highlights these architectures as a superior design route for creating lightweight and high-performance mechanical metamaterials. |
| first_indexed | 2025-03-09T11:57:30Z |
| format | Journal Article |
| id | ntu-10356/180506 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2025-03-09T11:57:30Z |
| publishDate | 2024 |
| record_format | dspace |
| spelling | ntu-10356/1805062024-10-12T16:48:10Z Superior fracture resistance and topology-induced intrinsic toughening mechanism in 3D shell-based lattice metamaterials Wang, Yujia Wu, Kunlin Zhang, Xuan Li, Xiaoyan Wang, Yifan Gao, Huajian School of Mechanical and Aerospace Engineering Institute of High Performance Computing, A*STAR Engineering Finite elements simulation Fracture experiments Lattice metamaterials have demonstrated remarkable mechanical properties at low densities. As these architected materials advance toward real-world applications, their tolerance for damage and defects becomes a limiting factor. However, a thorough understanding of the fracture resistance and fracture mechanisms in lattice metamaterials, particularly for the emerging shell-based lattices, has remained elusive. Here, using a combination of in situ fracture experiments and finite element simulations, we show that shell-based lattice metamaterials with Schwarz P minimal surface topology exhibit superior fracture resistance compared to conventional octet truss lattices, with average improvements in initiation toughness up to 150%. This superiority is attributed to the unique shell-based architecture that enables more efficient load transfer and higher energy dissipation through material damage, structural plasticity, and material plasticity. Our study reveals a topology-induced intrinsic toughening mechanism in shell-based lattices and highlights these architectures as a superior design route for creating lightweight and high-performance mechanical metamaterials. Agency for Science, Technology and Research (A*STAR) Nanyang Technological University Published version H.G. acknowledges a research start-up grant from the Nanyang Technological University (00247900001) and the Agency for Science, Technology and Research (A*STAR). Yifan Wang acknowledges the NAP award (020482) from Nanyang Technological University. X.L. acknowledges financial support from the National Natural Science Foundation of China (grant number 12325203). X.Z. acknowledges financial support from the Fundamental Research Funds for the Central Universities, Peking University. 2024-10-09T07:13:50Z 2024-10-09T07:13:50Z 2024 Journal Article Wang, Y., Wu, K., Zhang, X., Li, X., Wang, Y. & Gao, H. (2024). Superior fracture resistance and topology-induced intrinsic toughening mechanism in 3D shell-based lattice metamaterials. Science Advances, 10(35), eadq2664-. https://dx.doi.org/10.1126/sciadv.adq2664 2375-2548 https://hdl.handle.net/10356/180506 10.1126/sciadv.adq2664 39213350 2-s2.0-85203086776 35 10 eadq2664 en NTU SUG 002479-00001 NAP-020482 Science Advances © 2024 the Authors, some rights reserved; exclusive licensee American Association for the Advancement of Science. No claim to original U.S. Government Works. Distributed under a Creative Commons Attribution NonCommercial License 4.0 (CC BY-NC). application/pdf |
| spellingShingle | Engineering Finite elements simulation Fracture experiments Wang, Yujia Wu, Kunlin Zhang, Xuan Li, Xiaoyan Wang, Yifan Gao, Huajian Superior fracture resistance and topology-induced intrinsic toughening mechanism in 3D shell-based lattice metamaterials |
| title | Superior fracture resistance and topology-induced intrinsic toughening mechanism in 3D shell-based lattice metamaterials |
| title_full | Superior fracture resistance and topology-induced intrinsic toughening mechanism in 3D shell-based lattice metamaterials |
| title_fullStr | Superior fracture resistance and topology-induced intrinsic toughening mechanism in 3D shell-based lattice metamaterials |
| title_full_unstemmed | Superior fracture resistance and topology-induced intrinsic toughening mechanism in 3D shell-based lattice metamaterials |
| title_short | Superior fracture resistance and topology-induced intrinsic toughening mechanism in 3D shell-based lattice metamaterials |
| title_sort | superior fracture resistance and topology induced intrinsic toughening mechanism in 3d shell based lattice metamaterials |
| topic | Engineering Finite elements simulation Fracture experiments |
| url | https://hdl.handle.net/10356/180506 |
| work_keys_str_mv | AT wangyujia superiorfractureresistanceandtopologyinducedintrinsictougheningmechanismin3dshellbasedlatticemetamaterials AT wukunlin superiorfractureresistanceandtopologyinducedintrinsictougheningmechanismin3dshellbasedlatticemetamaterials AT zhangxuan superiorfractureresistanceandtopologyinducedintrinsictougheningmechanismin3dshellbasedlatticemetamaterials AT lixiaoyan superiorfractureresistanceandtopologyinducedintrinsictougheningmechanismin3dshellbasedlatticemetamaterials AT wangyifan superiorfractureresistanceandtopologyinducedintrinsictougheningmechanismin3dshellbasedlatticemetamaterials AT gaohuajian superiorfractureresistanceandtopologyinducedintrinsictougheningmechanismin3dshellbasedlatticemetamaterials |