Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/164041
Title: Nacre's brick–mortar structure suppresses the adverse effect of microstructural randomness
Authors: Yan, Yi
Zhao, Zi-Long
Feng, Xi-Qiao
Gao, Huajian
Keywords: Engineering::Mechanical engineering
Issue Date: 2022
Source: 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
Journal: Journal of the Mechanics and Physics of Solids 
Abstract: 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.
URI: https://hdl.handle.net/10356/164041
ISSN: 0022-5096
DOI: 10.1016/j.jmps.2021.104769
Rights: © 2021 Elsevier Ltd. All rights reserved.
Fulltext Permission: none
Fulltext Availability: No Fulltext
Appears in Collections:MAE Journal Articles

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