Adaptive structural reorientation: Developing extraordinary mechanical properties by constrained flexibility in natural materials

doi:10.1016/j.actbio.2019.01.010

CORC > 金属研究所 > 中国科学院金属研究所

	Adaptive structural reorientation: Developing extraordinary mechanical properties by constrained flexibility in natural materials
	Liu, Zengqian 1,2,3; Zhang, Yanyan 1; Zhang, Mingyang 1,2; Tan, Guoqi 1,2; Zhu, Yankun 1; Zhang, Zhefeng 1,2; Ritchie, Robert O.3
刊名	ACTA BIOMATERIALIA
	2019-03-01
卷号	86 页码:96-108
关键词	Biomechanics Structural reorientation Mechanical properties Biomaterials Bioinspiration
ISSN号	1742-7061
DOI	10.1016/j.actbio.2019.01.010
通讯作者	Zhang, Zhefeng(zhfzhang@imr.ac.cn) ; Ritchie, Robert O.(roritchie@lbl.gov)
英文摘要	Seeking strategies to enhance the overall combinations of mechanical properties is of great significance for engineering materials, but still remains a key challenge because many of these properties are often mutually exclusive. Here we reveal from the perspective of materials science and mechanics that adaptive structural reorientation during deformation, which is an operating mechanism in a wide variety of composite biological materials, functions more than being a form of passive response to allow for flexibility, but offers an effective means to simultaneously enhance rigidity, robustness, mechanical stability and damage tolerance. As such, the conflicts between different mechanical properties can be "defeated" in these composites merely by adjusting their structural orientation. The constitutive relationships are established based on the theoretical analysis to clarify the effects of structural orientation and reorientation on mechanical properties, with some of the findings validated and visualized by computational simulations. Our study is intended to give insight into the ingenious designs in natural materials that underlie their exceptional mechanical efficiency, which may provide inspiration for the development of new man-made materials with enhanced mechanical performance. Statement of Significance It is challenging to attain certain combinations of mechanical properties in man-made materials because many of these properties - for example, strength with toughness and stability with flexibility - are often mutually exclusive. Here we describe an effective solution utilized by natural materials, including wood, bone, fish scales and insect cuticle, to "defeat" such conflicts and elucidate the underlying mechanisms from the perspective of materials science and mechanics. We show that, by adaptation of their structural orientation on loading, composite biological materials are capable of developing enhanced rigidity, strength, mechanical stability and damage tolerance from constrained flexibility during deformation - combinations of attributes that are generally unobtainable in man-made systems. The design principles extracted from these biological materials present an unusual yet potent new approach to guide the development of new synthetic composites with enhanced combinations of mechanical properties. (C) 2019 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
资助项目	National Natural Science Foundation of China[51871216] ; National Natural Science Foundation of China[11802181] ; National Natural Science Foundation of China[51331007] ; Multi University Research Initiative from the Air Force Office of Scientific Research[AFOSR-FA9550-15-1-0009]
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000459842600006
资助机构	National Natural Science Foundation of China ; Multi University Research Initiative from the Air Force Office of Scientific Research
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/132117]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Zhefeng; Ritchie, Robert O.
作者单位	1.Chinese Acad Sci, Inst Met Res, Mat Fatigue & Fracture Div, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Hefei 230026, Anhui, Peoples R China 3.Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA
推荐引用方式 GB/T 7714	Liu, Zengqian,Zhang, Yanyan,Zhang, Mingyang,et al. Adaptive structural reorientation: Developing extraordinary mechanical properties by constrained flexibility in natural materials[J]. ACTA BIOMATERIALIA,2019,86:96-108.
APA	Liu, Zengqian.,Zhang, Yanyan.,Zhang, Mingyang.,Tan, Guoqi.,Zhu, Yankun.,...&Ritchie, Robert O..(2019).Adaptive structural reorientation: Developing extraordinary mechanical properties by constrained flexibility in natural materials.ACTA BIOMATERIALIA,86,96-108.
MLA	Liu, Zengqian,et al."Adaptive structural reorientation: Developing extraordinary mechanical properties by constrained flexibility in natural materials".ACTA BIOMATERIALIA 86(2019):96-108.