| 结构力学法求解碳纳米管的临界应变 |
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| 引用本文： | 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): 60-63,83 |
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| 作者姓名： | 唐文艳 袁清珂 |
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| 作者单位： | 广东工业大学,机电工程学院,广东,广州,510090 |
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| 基金项目： | 广东工业大学博士启动经费资助项目 |
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| 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.
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| 关 键 词： | 碳纳米管 框架结构 结构力学 |
| 文章编号： | 1007-7162（2007）02-0060-04 |
| 收稿时间： | 2006-09-30 |
| 修稿时间： | 2006-09-30 |
Critical Strain of Carbon Nanotube by Structural Mechanics Approach |
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| 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): 60-63,83 |
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| Authors: | TANG Wen-yan YUAN Qing-ke |
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| Affiliation: | Faculty of Electromechanical Engineering, Guangdong University of Technology, Guangzhou 510090, China |
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| 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. |
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| Keywords: | carbon nanotubes frame model structural mechanics |
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