Investigation of temperature effect on the mechanical properties of single-walled carbon nanotubes

被引：37

作者：

Liew, K. M. ^{[1
,2
]}

Yan, J. W. ^{[1
,2
,3
]}

Sun, Y. Z. ^{[4
]}

He, L. H. ^{[2
,3
]}

机构：

[1] City Univ Hong Kong, Dept Bldg & Construct, Kowloon, Hong Kong, Peoples R China

[2] USTC CityU Joint Adv Res Ctr, Suzhou, Peoples R China

[3] Univ Sci & Technol China, CAS Key Lab Mech Behav & Design Mat, Hefei, Peoples R China

[4] Zhongyuan Univ Technol, Coll Civil Engn & Architecture, Zhengzhou 450007, Peoples R China

来源：

COMPOSITE STRUCTURES | 2011年 / 93卷 / 09期

关键词：

Single-walled carbon nanotubes; Higher-order gradient continuum theory; Mechanical properties; FREE-ENERGY MINIMIZATION; CAUCHY-BORN RULE; MOLECULAR-DYNAMICS; ELASTIC PROPERTIES; TENSILE-STRENGTH; WAVE-PROPAGATION; FINITE-ELEMENT; CONTINUUM; ROPES; SIMULATION;

D O I：

10.1016/j.compstruct.2011.03.007

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

A temperature-related higher-order gradient continuum theory is proposed for predicting the mechanical properties of single-walled carbon nanotubes (SWCNTs) at various temperatures. It is found that the axial elastic moduli of zigzag (21, 0), armchair (12, 12) and chiral (15, 9) SWCNTs with similar radii approach 0.7 TPa when T = 0 K. but decline slightly on different slopes. These results indicate that the temperature effect influences the axial Young moduli of zigzag SWCNTs less than those of the other types. Moreover, the parameters lambda(1) and lambda(2) corresponding to the uniform longitudinal and circumferential stretches at different temperatures are also examined, and the results show that with an increasing temperature, all SWCNTs are stretched in the longitudinal direction, while in the circumferential direction, only the zigzag SWCNTs are stretched, whereas the others are compressed. (C) 2011 Elsevier Ltd. All rights reserved.

引用

页码：2208 / 2212

页数：5

共 31 条

[1] Finite element methods for the non-linear mechanics of crystalline sheets and nanotubes [J].

Arroyo, M ;

Belytschko, T .

INTERNATIONAL JOURNAL FOR NUMERICAL METHODS IN ENGINEERING, 2004, 59 (03) :419-456

[2] EMPIRICAL POTENTIAL FOR HYDROCARBONS FOR USE IN SIMULATING THE CHEMICAL VAPOR-DEPOSITION OF DIAMOND FILMS [J].

BRENNER, DW .

PHYSICAL REVIEW B, 1990, 42 (15) :9458-9471

[3] Direct mechanical measurement of the tensile strength and elastic modulus of multiwalled carbon nanotubes [J].

Demczyk, BG ;

Wang, YM ;

Cumings, J ;

Hetman, M ;

Han, W ;

Zettl, A ;

Ritchie, RO .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2002, 334 (1-2) :173-178

[4] A molecular mechanics analysis of the buckling behavior of carbon nanorings under tension [J].

Feng, Cong ;

Liew, K. M. .

CARBON, 2009, 47 (15) :3508-3514

[5] Energetics and structures of carbon nanorings [J].

Feng, Cong ;

Liew, K. M. .

CARBON, 2009, 47 (07) :1664-1669

[6] Theoretical variations in the Young's modulus of single-walled carbon nanotubes with tube radius and temperature: a molecular dynamics study [J].

Hsieh, Jin-Yuan ;

Lu, Jian-Ming ;

Huang, Min-Yi ;

Hwang, Chi-Chuan .

NANOTECHNOLOGY, 2006, 17 (15) :3920-3924

[7] Superplastic carbon nanotubes - Conditions have been discovered that allow extensive deformation of rigid single-walled nanotubes. [J].

Huang, JY ;

Chen, S ;

Wang, ZQ ;

Kempa, K ;

Wang, YM ;

Jo, SH ;

Chen, G ;

Dresselhaus, MS ;

Ren, ZF .

NATURE, 2006, 439 (7074) :281-281

[8] HELICAL MICROTUBULES OF GRAPHITIC CARBON [J].

IIJIMA, S .

NATURE, 1991, 354 (6348) :56-58

[9] FINITE-TEMPERATURE DEFECT PROPERTIES FROM FREE-ENERGY MINIMIZATION [J].

LESAR, R ;

NAJAFABADI, R ;

SROLOVITZ, DJ .

PHYSICAL REVIEW LETTERS, 1989, 63 (06) :624-627

[10] Tensile strength of single-walled carbon nanotubes directly measured from their macroscopic ropes [J].

Li, F ;

Cheng, HM ;

Bai, S ;

Su, G ;

Dresselhaus, MS .

APPLIED PHYSICS LETTERS, 2000, 77 (20) :3161-3163

← 1 2 3 4 →