The microscopic deformation mechanism of 3D graphene foam materials under uniaxial compression

doi:10.1016/j.carbon.2016.08.084

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	The microscopic deformation mechanism of 3D graphene foam materials under uniaxial compression
	Wang C(王超); Zhang C; Chen SH(陈少华); Chen, SH (reprint author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China.
发表期刊	CARBON
	2016
卷号	109 页码:666-672
ISSN	0008-6223
摘要	Recent experiments have shown that the graphene foam material exhibits a rubber-like constitutive behavior and a near-zero Poisson's ratio. We have performed coarse grain molecular dynamics simulations, which show that these intriguing phenomena can be attributed to the microstructure deformation, rearrangement and compaction in three stages, respectively. The elastic deformation of microstructures leads to the initial linear behavior of the graphene foam material. Microstructure rearrangement, including bending, self-folding and flake-rotation, should be responsible for the second stage with a good performance of deformation but with a low bearing capacity. Microstructure compaction leads to a high bearing capacity at the last stage. A near-zero Poisson's ratio of the material within a certain range of compressive strain is also found to be due to the microstructure rearrangement, which induces soft flakes to fill the empty space without volume expansion in the other directions. Furthermore, it demonstrates that Poisson's ratio of such a type of material can be further tuned by the stiffness of graphene flakes as well as the amplitude of external strain. This study highlights the promise of graphene foam materials for energy absorption and dissipation under extreme conditions. (C) 2016 Elsevier Ltd. All rights reserved.
DOI	10.1016/j.carbon.2016.08.084
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000385900100074
WOS研究方向	Chemistry ; Materials Science
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary
项目资助者	The work reported here is supported by NSFC through Grants #11532013, #11372317, #11502150 and the 973 Nano-project (2012CB937500).
课题组名称	LNM仿生材料与固体的微尺度力学
论文分区	一类
力学所作者排名	True
引用统计	被引频次：56[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/59701
专题	非线性力学国家重点实验室
通讯作者	Chen, SH (reprint author), Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China.
推荐引用方式 GB/T 7714	Wang C,Zhang C,Chen SH,et al. The microscopic deformation mechanism of 3D graphene foam materials under uniaxial compression[J]. CARBON,2016,109:666-672.
APA	王超,Zhang C,陈少华,&Chen, SH .(2016).The microscopic deformation mechanism of 3D graphene foam materials under uniaxial compression.CARBON,109,666-672.
MLA	王超,et al."The microscopic deformation mechanism of 3D graphene foam materials under uniaxial compression".CARBON 109(2016):666-672.

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