https://scholars.lib.ntu.edu.tw/handle/123456789/576000
標題: | Geometrically toughening mechanism of cellular composites inspired by Fibonacci lattice in Liquidambar formosana | 作者: | Chiang Y Tung C.-C Lin X.-D Chen P.-Y CHUIN-SHAN CHEN SHU-WEI CHANG |
關鍵字: | Biomimetics; Building blockes; Cellular composite; Compressive stiffness; Fibonacci lattices; Fracture mode; Strain response; Structural geometry; Toughening mechanisms; Composite structures | 公開日期: | 2021 | 卷: | 262 | 來源出版物: | Composite Structures | 摘要: | Cellular composites found in nature have provided fruitful inspirations for their exceptional toughness with merely a few building blocks of base constituents. The infructescence of Liquidambar formosana, which has porous cells arranged in spherical Fibonacci spirals, demonstrates high compressive stiffness and strength albeit lightweight and high porosity. In this work, we propose a Fibonacci composite inspired by Liquidambar formosana. The stress–strain response and fracture modes of bio-inspired cellular composites are simulated to show that the structural geometry of stiff skeleton and soft inclusion governs the toughening performance of cellular composites. The Fibonacci composite outperforms other studied geometries in terms of specific stiffening, strengthening, and toughening because of its high degree of isotropy to arrest and deflect the cracks across multiple length scales. ? 2020 Elsevier Ltd |
URI: | https://www.scopus.com/inward/record.uri?eid=2-s2.0-85097465542&doi=10.1016%2fj.compstruct.2020.113349&partnerID=40&md5=476a232c2b271878179b5605b96806f7 https://scholars.lib.ntu.edu.tw/handle/123456789/576000 |
ISSN: | 2638223 | DOI: | 10.1016/j.compstruct.2020.113349 |
顯示於: | 土木工程學系 |
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