学术
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.[著者文摘]
文章出处:
《广东工业大学学报》-2007年24卷2期,83 -60-63,83页
分 类 号:
文献标识码:
A
文章编号:
1007-7162（2007）02-0060-04
Critical Strain of Carbon Nanotube by Structural Mechanics Approach
TANG Wen-yan,YUAN Qing-ke （Faculty of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510090, China）
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 can effectively simulate buckling behaviour of carbon nanotubes and predict the critical strain.[著者文摘]
Key words:
carbon nanotubes ; frame model; structural mechanics
基金资助:
广东工业大学博士启动经费资助项目（053002）
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