中国科学院机构知识库网格
Chinese Academy of Sciences Institutional Repositories Grid
首页 机构 成果 学者
  
  1. CAS IR Grid
  2. 力学研究所
  3. 中国科学院力学研究所
  4. 非线性力学国家重点实验室
The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression

文献类型：期刊论文

作者Khan, Muhammad Bilal3,4; Wang C(王超)1,2; Wang, Shuai3,4; Fang, Daining3,4; Chen, Shaohua3,4
刊名NANOTECHNOLOGY
出版日期2021-03-12
卷号32期号:11页码:11
关键词nanoparticle filled graphene foam material uniaixal compression mechanical property micro deformation mechanism coarse-grained molecular dynamics
ISSN号0957-4484
DOI10.1088/1361-6528/abcfe8
通讯作者Wang, Chao(wangchao@lnm.imech.ac.cn) ; Chen, Shaohua()
英文摘要Nanoparticle-contained graphene foams have found more and more practical applications in recent years, which desperately requires a deep understanding on basic mechanics of this hybrid material. In this paper, the microscopic deformation mechanism and mechanical properties of such a hybrid material under uniaxial compression, that are inevitably encountered in applications and further affect its functions, are systematically studied by the coarse-grained molecular dynamics simulation method. Two major factors of the size and volume fraction of nanoparticles are considered. It is found that the constitutive relation of nanoparticle filled graphene foam materials consists of three parts: the elastic deformation stage, deformation with inner re-organization and the final compaction stage, which is much similar to the experimental measurement of pristine graphene foam materials. Interestingly, both the initial and intermediate modulus of such a hybrid material is significantly affected by the size and volume fraction of nanoparticles, due to their influences on the microstructural evolution. The experimentally observed 'spacer effect' of such a hybrid material is well re-produced and further found to be particle-size sensitive. With the increase of nanoparticle size, the micro deformation mechanism will change from nanoparticles trapped in the graphene sheet, slipping on the graphene sheet, to aggregation outside the graphene sheet. Beyond a critical relative particle size 0.26, the graphene-sheet-dominated deformation mode changes to be a nanoparticle-dominated one. The final microstructure after compression of the hybrid system converges to two stable configurations of the 'sandwiched' and 'randomly-stacked' one. The results should be helpful not only to understand the micro mechanism of such a hybrid material in different applications, but also to the design of advanced composites and devices based on porous materials mixed with particles.
分类号二类
WOS关键词IN-SITU ; ANODE MATERIALS ; AEROGEL ; PERFORMANCE ; COMPOSITE ; NETWORKS ; STORAGE ; NANOCRYSTALS ; BEHAVIOR ; INSIGHT
资助项目NSFC[11872114] ; NSFC[11532013] ; NSFC[11972348] ; NSFC[12002034] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] ; CAS/SAFEA International Partnership Program for Creative Research Teams
WOS研究方向Science & Technology - Other Topics ; Materials Science ; Physics
语种英语
WOS记录号WOS:000601418800001
资助机构NSFC ; Strategic Priority Research Program of the Chinese Academy of Sciences ; CAS/SAFEA International Partnership Program for Creative Research Teams
其他责任者Wang, Chao ; Chen, Shaohua
源URL[http://dspace.imech.ac.cn/handle/311007/85891]  
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;
3.Beijing Inst Technol, Beijing Key Lab Lightweight Multifunct Composite, Beijing 100081, Peoples R China;
4.Beijing Inst Technol, Inst Adv Struct Technol, Beijing 100081, Peoples R China;
推荐引用方式
GB/T 7714		 Khan, Muhammad Bilal,Wang C,Wang, Shuai,et al. The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression[J]. NANOTECHNOLOGY,2021,32(11):11.
APA Khan, Muhammad Bilal,王超,Wang, Shuai,Fang, Daining,&Chen, Shaohua.(2021).The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression.NANOTECHNOLOGY,32(11),11.
MLA Khan, Muhammad Bilal,et al."The mechanical property and microscopic deformation mechanism of nanoparticle-contained graphene foam materials under uniaxial compression".NANOTECHNOLOGY 32.11(2021):11.

入库方式： OAI收割

来源：力学研究所

浏览0
下载0
收藏0
其他版本

除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。