Strain Hardening in Graphene Foams under Shear

doi:10.1021/acsomega.1c03127

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	Strain Hardening in Graphene Foams under Shear
	Yang T(杨田)1,2; Wang C(王超)1,2 ; Wu ZB(武作兵)1,2
通讯作者	Wang, Chao([email protected]) ; Wu, Zuobing([email protected])
发表期刊	ACS OMEGA
	2021-09-07
卷号	6 期号:35 页码:22780-22790
ISSN	2470-1343
摘要	Strain hardening is an important issue for the design and application of materials. The strain hardening of graphene foams has been widely observed but poorly understood. Here, by adopting the coarse-grained molecular dynamics method, we systematically investigated the microscopic mechanism and influencing factors of strain hardening and related mechanical properties of graphene foams under shear loading. We found that the strain hardening is induced by cumulative nonlocalized bond-breakings and rearrangements of microstructures. Furthermore, it can be effectively tuned by the number of graphene layers and cross-link densities, i.e., the strain hardening would emerge at a smaller shear strain for the graphene foams with thicker sheets and/or more cross-links. In addition, the shear stiffness G of graphene foams increases linearly with the cross-link density and exponentially with the number of graphene layers n by G similar to n(1.95). These findings not only improve our understanding of the promising bulk materials but also pave the way for optimizing structural design in wide applications based on their mechanical properties.
DOI	10.1021/acsomega.1c03127
收录类别	SCI
语种	英语
WOS记录号	WOS:000695518100031
关键词[WOS]	SPONGY GRAPHENE ; TEMPERATURE ; NANOTUBES ; AEROGELS ; BEHAVIOR ; HYBRID
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
资助项目	National Natural Science Foundation of China[11972348] ; National Natural Science Foundation of China[11790292] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040403]
项目资助者	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
论文分区	二类
力学所作者排名	1
RpAuthor	Wang, Chao ; Wu, Zuobing
引用统计	被引频次：4[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/311007/87469
专题	非线性力学国家重点实验室
作者单位	1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Yang T,Wang C,Wu ZB. Strain Hardening in Graphene Foams under Shear[J]. ACS OMEGA,2021,6,35,:22780-22790.Rp_Au:Wang, Chao, Wu, Zuobing
APA	杨田,王超,&武作兵.(2021).Strain Hardening in Graphene Foams under Shear.ACS OMEGA,6(35),22780-22790.
MLA	杨田,et al."Strain Hardening in Graphene Foams under Shear".ACS OMEGA 6.35(2021):22780-22790.

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