Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness
Biological materials have evolved various degrees of robustness against microscopic defects and structural randomness. Of particular interest here is whether and how nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness. To this end, a tension–shear–chain (T...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2023
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/164041 |
| _version_ | 1826121246881873920 |
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| author | Yan, Yi Zhao, Zi-Long Feng, Xi-Qiao Gao, Huajian |
| author2 | School of Mechanical and Aerospace Engineering |
| author_facet | School of Mechanical and Aerospace Engineering Yan, Yi Zhao, Zi-Long Feng, Xi-Qiao Gao, Huajian |
| author_sort | Yan, Yi |
| collection | NTU |
| description | Biological materials have evolved various degrees of robustness against microscopic defects and structural randomness. Of particular interest here is whether and how nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness. To this end, a tension–shear–chain (TSC) network model, combined with the virtual internal bond concept, is adopted to investigate the effects of microstructural randomness of nacre, where we show that the ensemble strength and failure behaviors of a larger TSC model exhibit substantially lower randomness. Our results indicate that the staggered brick–mortar structure renders nacre insensitive to microstructural randomness, resulting in enhanced resistance to strain localization and crack initiation at weaker interfaces. The influence of microstructural randomness on the size effect of the ensemble mechanical properties of nacre is also revealed. This study provides further insights and guidelines for designing strong and robust nacre-mimic composites. |
| first_indexed | 2024-10-01T05:29:35Z |
| format | Journal Article |
| id | ntu-10356/164041 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T05:29:35Z |
| publishDate | 2023 |
| record_format | dspace |
| spelling | ntu-10356/1640412023-01-03T06:21:42Z Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness Yan, Yi Zhao, Zi-Long Feng, Xi-Qiao Gao, Huajian School of Mechanical and Aerospace Engineering Institute of High-Performance Computing, A*STAR Engineering::Mechanical engineering Nacre Microstructural Randomness Biological materials have evolved various degrees of robustness against microscopic defects and structural randomness. Of particular interest here is whether and how nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness. To this end, a tension–shear–chain (TSC) network model, combined with the virtual internal bond concept, is adopted to investigate the effects of microstructural randomness of nacre, where we show that the ensemble strength and failure behaviors of a larger TSC model exhibit substantially lower randomness. Our results indicate that the staggered brick–mortar structure renders nacre insensitive to microstructural randomness, resulting in enhanced resistance to strain localization and crack initiation at weaker interfaces. The influence of microstructural randomness on the size effect of the ensemble mechanical properties of nacre is also revealed. This study provides further insights and guidelines for designing strong and robust nacre-mimic composites. This work is sponsored by the National Natural Science Foundation of China (Grant Nos. 12002184, 12032104, and 11921002) and the fellowship of China Postdoctoral Science Foundation (Grant Nos. 2020TQ0173 and 2021M691797). 2023-01-03T06:21:42Z 2023-01-03T06:21:42Z 2022 Journal Article Yan, Y., Zhao, Z., Feng, X. & Gao, H. (2022). Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness. Journal of the Mechanics and Physics of Solids, 159, 104769-. https://dx.doi.org/10.1016/j.jmps.2021.104769 0022-5096 https://hdl.handle.net/10356/164041 10.1016/j.jmps.2021.104769 2-s2.0-85122034079 159 104769 en Journal of the Mechanics and Physics of Solids © 2021 Elsevier Ltd. All rights reserved. |
| spellingShingle | Engineering::Mechanical engineering Nacre Microstructural Randomness Yan, Yi Zhao, Zi-Long Feng, Xi-Qiao Gao, Huajian Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness |
| title | Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness |
| title_full | Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness |
| title_fullStr | Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness |
| title_full_unstemmed | Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness |
| title_short | Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness |
| title_sort | nacre s brick mortar structure suppresses the adverse effect of microstructural randomness |
| topic | Engineering::Mechanical engineering Nacre Microstructural Randomness |
| url | https://hdl.handle.net/10356/164041 |
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