Compressive deformation mechanism of honeycomb-like graphene aerogels | |
Shang JJ; Yang QS; Liu X; Wang C(王超) | |
发表期刊 | CARBON |
2018-08-01 | |
卷号 | 134页码:398-410 |
ISSN | 0008-6223 |
摘要 | Graphene aerogels (GAs) are a kind of advanced graphene assemblies, which are quite elastic and can easily restore their original form after compression. The macroscale compression behavior of the GAs is the result of microstructural evolution of the graphene sheets. In this paper, the microstructural compression response of honeycomb-like GAs is investigated via coarse-grained molecular dynamics (CGMD) method. Based on the coarse-grained (CG) model of a single-layer graphene, honeycomb-like structures can be built and arranged layer-by-layer to form the complete GA model. CGMD simulations presented in this work are carried out with a TersoffCG potential, which was developed specifically for single-layer graphene. The effects of layer number, size of the graphene sheets and the interlaminar overlap pattern on the compressive behavior of the GAs are studied. Moreover, the stress distribution in graphene networks of the GAs during the compression process is analyzed. Different microscale strain concentrations and stress localizations are discovered in the GAs with different network patterns. Furthermore, a negative Poisson's ratio of the models within a certain range of compressive strain is found, which is related to both the microstructural arrangement and the deformation of graphene sheet. (C) 2018 Elsevier Ltd. All rights reserved. |
DOI | 10.1016/j.carbon.2018.04.013 |
收录类别 | SCI ; EI |
语种 | 英语 |
WOS记录号 | WOS:000433244900043 |
关键词[WOS] | Carbon Nanotube Fibers ; Coarse-grained Model ; Microstructural Evolution ; Thermal-conductivity ; Poissons Ratio ; Foam ; Design ; Oxide ; Architectures ; Simulations |
WOS研究方向 | Chemistry ; Materials Science |
WOS类目 | Chemistry, Physical ; Materials Science, Multidisciplinary |
项目资助者 | National Natural Science Foundation of China(11502007 ; Hong Kong Scholar Program(XJ2016021) ; Beijing University of Technology ; State Key Laboratory of Nonlinear Mechanics ; 11472020 ; 11632005 ; 11602270) |
论文分区 | 一类 |
力学所作者排名 | 1 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://dspace.imech.ac.cn/handle/311007/77497 |
专题 | 非线性力学国家重点实验室 |
推荐引用方式 GB/T 7714 | Shang JJ,Yang QS,Liu X,et al. Compressive deformation mechanism of honeycomb-like graphene aerogels[J]. CARBON,2018,134:398-410. |
APA | Shang JJ,Yang QS,Liu X,&王超.(2018).Compressive deformation mechanism of honeycomb-like graphene aerogels.CARBON,134,398-410. |
MLA | Shang JJ,et al."Compressive deformation mechanism of honeycomb-like graphene aerogels".CARBON 134(2018):398-410. |
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