Mechanical properties of functionally graded hierarchical bamboo structures

被引：292

作者：

Tan, T. ^{[1
,2
]}

Rahbar, N. ^{[3
]}

Allameh, S. M. ^{[4
]}

Kwofie, S. ^{[5
]}

Dissmore, D. ^{[1
,2
]}

Ghavami, K. ^{[6
]}

Soboyejo, W. O. ^{[1
,7
]}

机构：

[1] Princeton Univ, Princeton Inst Sci & Technol Mat, Princeton, NJ 08544 USA

[2] Princeton Univ, Dept Civil & Environm Engn, Princeton, NJ 08544 USA

[3] Univ Massachusetts Dartmouth, Dept Civil & Environm Engn, N Dartmouth, MA 02747 USA

[4] Univ Kentucky, Dept Phys & Geol, Highland Hts, KY 41099 USA

[5] Kwame Nkrumah Univ Sci & Technol, Dept Mat Engn, Kumasi, Ghana

[6] Pontificia Univ Catolica Rio de Janeiro, Dept Civil Engn, Rio de Janeiro, Brazil

[7] Princeton Univ, Dept Mech & Aerosp Engn, Princeton, NJ 08544 USA

来源：

ACTA BIOMATERIALIA | 2011年 / 7卷 / 10期

基金：

美国国家科学基金会;

关键词：

Bamboo; Mechanical properties; Young's moduli; Strength; Resistance curve behavior; FRACTURE-TOUGHNESS; CURVE BEHAVIOR; COMPOSITES; NANOINDENTATION; REINFORCEMENT; STRENGTH; FATIGUE; FIBERS;

D O I：

10.1016/j.actbio.2011.06.008

中图分类号：

R318 [生物医学工程];

学科分类号：

0831 ;

摘要：

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.

引用

页码：3796 / 3803

页数：8

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