| 碳纳米管中弹性弯曲波的尺度特性研究 |
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| 引用本文： | 申俊,李显方.碳纳米管中弹性弯曲波的尺度特性研究[J].中国西部科技,2010,9(4):36-37,47. |
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| 作者姓名： | 申俊 李显方 |
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| 作者单位： | 中南大学土木建筑学院力学与传感技术研究所,湖南,长沙,410083 |
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| 摘 要： | 基于非局部-梯度弹性理论,本文研究了碳纳米管中弯曲波的传播特性。利用理论方法与数值方法获得了在自由空间以及嵌入在弹性介质中的单壁碳纳米管中波的色散关系,研究了在不同的波数下尺度因子与弹性介质对单壁碳纳米管中波的色散关系的影响。数值结果表明弯曲波的波速在低波数下受弹性介质影响较大,在高波数下受尺度效应影响较大。
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| 关 键 词： | 非局部弹性理论 尺度效应 碳纳米管 弯曲波 |
Scale Effect on Wave Propagation of Carbon Nanotubes |
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| SHEN Jun,LI Xian-fang.Scale Effect on Wave Propagation of Carbon Nanotubes[J].Science and Technology of West China,2010,9(4):36-37,47. |
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| Authors: | SHEN Jun LI Xian-fang |
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| Institution: | SHEN Jun,LI Xian-fang (IMST,School of Civil Engineering , Architecture,Central South University,Hunan 410083,China) |
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| Abstract: | Based on the nonlocal-gradient elasticity theory,this paper studies wave propagation in nanotubes.Using the theory way and numerical way,the effects of small scale and the surrounding elastic medium on the dispersion characteristics of the transverse wave for diffirent wave numbers in singlewalled nanotubes embedded in free medium and in surrounding elastic medium are given.The numerical results show that the dispersion characteristics of wave are affected by the surrounding elastic medium obviously for sma... |
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| Keywords: | Nonlocal elasticity theory Scale effect Carbon nanotubes Bending wave |
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