Size- and edge-effect cohesive energy and shear strength between graphene, carbon nanotubes and nanofibers: Continuum modeling and molecular dynamics simulations

被引：29

作者：

Chen, Yinfeng ^{[1
]}

Ding, Dongqing ^{[1
]}

Zhu, Chunhua ^{[1
]}

Zhao, Junhua ^{[1
,2
]}

Rabczuk, Timon ^{[3
]}

机构：

[1] Jiangnan Univ, Jiangsu Key Lab Adv Food Mfg Equipment & Technol, Wuxi 214122, Peoples R China

[2] Jiangnan Univ, Sch Mech Engn, Inst Mech & Adv Mat, Wuxi 214122, Peoples R China

[3] Bauhaus Univ Weimar, Inst Struct Mech, D-99423 Weimar, Germany

来源：

COMPOSITE STRUCTURES | 2019年 / 208卷

基金：

中国国家自然科学基金;

关键词：

Cohesive energy; Shear stress; Size effect; Edge effect; Graphene; Carbon nanotube; Nanofiber; THEORETICAL-ANALYSIS; INTERFACES; COMPOSITE; LAW;

D O I：

10.1016/j.compstruct.2018.10.021

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Explicit expressions for the size- and edge-effect cohesive energy and shear stress between two finite-sized graphene (graphene/graphene), two finite-sized carbon nanotubes (CNTs) (CNT/CNT) and two finite-sized nanofibers (nanofiber/nanofiber) are obtained through continuum modeling of van der Waals (vdW) interactions between them. The close-form solutions of the cohesive energy and shear stress between these structures at different positions are derived by using Gaussian quadrature. The analytical results of the edge-effect cohesive energy show that both of the maximum repulsive and attractive shear stresses are always close to the initial intersecting positions between them. Checking against present molecular dynamics (MD) calculations and available experimental results shows that the continuum solutions are reasonable, in which the main reason of their difference is also revealed in detail. The obtained analytical solutions should be of great help for understanding the size- and edge-effect interactions between these nanostructures and designing nanoelectronic devices.

引用

页码：150 / 167

页数：18

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