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Title: On the influence of interfacial properties to the bending rigidity of layered structures
Author: Peng SY; Wei YJ(魏宇杰)
Source: JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS
Issued Date: 2016
Volume: 92, Pages:278-296
Abstract: Layered structures are ubiquitous, from one-atom thick layers in two-dimensional materials, to nanoscale lipid bi-layers, and to micro and millimeter thick layers in composites. The mechanical behavior of layered structures heavily depends on the interfacial properties and is of great interest in engineering practice. In this work, we give an analytical solution of the bending rigidity of bilayered structures as a function of the interfacial shear strength. Our results show that while the critical bending stiffness when the interface starts to slide plastically is proportional to the interfacial shear strength, there is a strong nonlinearity between the rigidity and the applied bending after interfacial plastic shearing. We further give semi-analytical solutions to the bending of bilayers when both interfacial shearing and pre-existing crack are present in the interface of rectangular and circular bilayers. The analytical solutions are validated by using finite element simulations. Our analysis suggests that interfacial shearing resistance, interfacial stiffness and preexisting cracks dramatically influence the bending rigidity of bilayers. The results can be utilized to understand the significant stiffness difference in typical biostructures and novel materials, and may also be used for non-destructive detection of interfacial crack in composites when stiffness can be probed through vibration techniques. (C) 2016 Elsevier Ltd. All rights reserved.
Keyword: Bending stiffness ; Interface sliding ; Interfacial crack ; Multi-layered composite ; Bilayer structures
Language: 英语
Indexed Type: SCI ; EI
Corresponding Author: Wei, YJ (reprint author), Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China.
Correspondent Email: yujie_wei@lnm.imech.ac.cn
DOI: 10.1016/j.jmps.2016.04.005
Related URLs: 查看原文
DOC Type: 期刊论文
WOS Subject: Materials Science, Multidisciplinary ; Mechanics ; Physics, Condensed Matter
WOS Subject Extended: Materials Science ; Mechanics ; Physics
WOS Keyword Plus: Bending stiffness ; Interface sliding ; Interfacial crack ; Multi-layered composite ; Bilayer structures
WOS ID: WOS:000379359900015
ISSN: 0022-5096
Funder: The authors acknowledge support from the National Natural Science Foundation of China (NSFC) (Grant no. 11425211), and MOST 973 of China (Grant no. 2012CB937500).
Rank: [Peng, Shenyou; Wei, Yujie] Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China
Department: LNM微结构计算力学(筹)
Classification: 一类
First Institution (Yes or Not): True
Citation statistics:
Content Type: 期刊论文
URI: http://dspace.imech.ac.cn/handle/311007/59552
Appears in Collections:非线性力学国家重点实验室_期刊论文

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