结构力学法求解碳纳米管的临界应变

广东工业大学学报 ›› 2007, Vol. 24 ›› Issue (2): 60-63.

结构力学法求解碳纳米管的临界应变

广东工业大学机电工程学院；广东工业大学机电工程学院广东广州510090；广东广州510090；

出版日期:2007-07-02 发布日期:2007-07-02
基金资助:
广东工业大学博士启动经费资助项目(053002)

Critical Strain of Carbon Nanotube by Structural Mechanics Approach

(Faculty of Electromechanical Engineering,Guangdong University of Technology,Guangzhou 510090,China)

Online:2007-07-02 Published:2007-07-02

摘要/Abstract

摘要： 采用宏观的力学模型,研究了具有不同长径比的锯齿型和扶手椅型碳纳米管的屈曲变形.其结果表明在长径比不变的情况下,随着碳纳米管半径的增加,临界应变值降低;长径比对临界应变有重要的影响;对于小的长径比,连续体壳理论是有效的,但是随着长径比的增加,碳纳米管半径小于0.8 mm的情况下,出现了分歧.因此宏观力学框架模型能有效地模拟碳纳米管的屈曲,预测临界应变.

关键词: 碳纳米管；框架结构；结构力学；

Abstract: The paper investigates buckling deformation of armchair and zigzag nanotubes with different length-radius ratio(H/R).The results show that the critical strain decreases as the radius increases with certain length-radius ratio nanotubes;length-radius ratio has important effect on the critical strain;for small length-radius ratio,the continuum shell theory is valid,but as length-radius ratio increases and at the radius of less than 0.8 nm,the divergence appears.So macroscopic mechanics frame model...

Key words: carbon nanotubes； frame model； structural mechanics；

唐文艳；袁清珂； . 结构力学法求解碳纳米管的临界应变[J]. 广东工业大学学报, 2007, 24(2): 60-63.

TANG Wen-yan,YUAN Qing-ke . Critical Strain of Carbon Nanotube by Structural Mechanics Approach[J]. Journal of Guangdong University of Technology, 2007, 24(2): 60-63.

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