...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>International Journal of Solids and Structures >Modeling of van der Waals force for infinitesimal deformation of multi-walled carbon nanotubes treated as cylindrical shells
【24h】

Modeling of van der Waals force for infinitesimal deformation of multi-walled carbon nanotubes treated as cylindrical shells

机译：范德华力建模为圆柱壳的多壁碳纳米管的无穷变形的模型

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This paper models van der Waals (vdW) force for axially compressed multi-walled carbon nanotubes (CNTs), whereby each tube is treated as a cylindrical shell continuum. Explicit formulas are derived for predicting the critical axial strain of a triple-walled CNT using a more refined vdW model. The analysis of a cylindrical shell continuum model of multi-walled CNTs using this refined vdW force model is carried out to study the influence of the effect of vdW interaction between different layers of a CNT and the size effect of a CNT on the vdW interaction. It is shown herein that the greatest contribution to the vdW interaction comes from the adjacent layers and the contribution from a remote layer may be neglected. The vdW interaction is found to be strongly dependent on the radius of the tube, especially when the radius is small enough (< 7 nm). When the radius is large enough (> 40 nm), the vdW interaction coefficient c(ij) can be taken as a constant value (i.e. independent of radius). However, these constant values are different for the vdW interaction between two different layers of a multi-walled CNT. The effect of the vdW interaction on the critical axial strain of a triple-walled CNT for the cases of before and after buckling is also examined for various innermost radii. (c) 2005 Elsevier Ltd. All rights reserved.
机译：本文对轴向压缩的多壁碳纳米管（CNT）的范德华力（vdW）进行建模，从而将每个管视为圆柱壳连续体。导出了明确的公式，以使用更精确的vdW模型预测三壁CNT的临界轴向应变。使用这种改进的vdW力模型对多壁CNT的圆柱壳连续体模型进行了分析，以研究vdW相互作用在CNT的不同层之间的影响以及CNT的尺寸效应对vdW相互作用的影响。在此示出，对vdW交互的最大贡献来自相邻层，并且来自远程层的贡献可以忽略。发现vdW相互作用强烈依赖于管的半径，尤其是当半径足够小（<7 nm）时。当半径足够大（＞ 40nm）时，vdW相互作用系数c（ij）可以取为恒定值（即与半径无关）。然而，对于多壁CNT的两个不同层之间的vdW相互作用，这些常数值是不同的。还针对各种最内半径检查了屈曲前后vdW相互作用对三壁CNT临界轴向应变的影响。 （c）2005 Elsevier Ltd.保留所有权利。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号