Strain Hardening in Graphene Foams under Shear
文献类型：期刊论文
| 作者 | Yang T(杨田)1,2; Wang C(王超)1,2 ; Wu ZB(武作兵)1,2
|
| 刊名 | ACS OMEGA
 |
| 出版日期 | 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 |
| WOS关键词 | SPONGY GRAPHENE ; TEMPERATURE ; NANOTUBES ; AEROGELS ; BEHAVIOR ; HYBRID |
| 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 |
| 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. |
入库方式： OAI收割
来源：力学研究所
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