期刊
ACTA BIOMATERIALIA
卷 7, 期 10, 页码 3796-3803出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.actbio.2011.06.008
关键词
Bamboo; Mechanical properties; Young's moduli; Strength; Resistance curve behavior
资金
- Princeton University
- Division of Civil and Mechanical Science Foundation [CMS 0303492]
- Division of Materials Research of the National Science Foundation [DMR 0231418]
This paper presents the results of a series of multi-scale experiments and numerical models concerning the mechanical properties of moso culm functionally graded bamboo structures. On the nano- and micro-scales, nanoindentation techniques are used to study the local variations in the Young's moduli of moso culm bamboo cross-sections. These are then incorporated into finite element models in which the actual variations in Young's moduli are used to model the deformation and fracture of bamboo during fracture toughness experiments. Similarly, the measured gradations in moduli are incorporated into crack bridging models that predict the toughening observed during resistance curve tests. The implications of the results are discussed for the bio-inspired design of structures that mimic the layered, functionally graded structure of bamboo. (C) 2011 Acts Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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