Strain Hardening in Graphene Foams under Shear

doi:10.1021/acsomega.1c03127

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	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
刊名	ACS OMEGA
	2021-09-07
卷号	6 期号:35 页码:22780-22790
ISSN号	2470-1343
DOI	10.1021/acsomega.1c03127
通讯作者	Wang, Chao(wangchao@lnm.imech.ac.cn) ; Wu, Zuobing(wuzb@lnm.imech.ac.cn)
英文摘要	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.
分类号	二类
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]
WOS关键词	SPONGY GRAPHENE ; TEMPERATURE ; NANOTUBES ; AEROGELS ; BEHAVIOR ; HYBRID
WOS研究方向	Chemistry
语种	英语
WOS记录号	WOS:000695518100031
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences
其他责任者	Wang, Chao ; Wu, Zuobing
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/87468]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, 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.
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.