Wang Jun, Chen Yinfeng, Yu Peishi
School of Mechanical Technology, Wuxi Institute of Technology, Wuxi 214121, China.
School of Mechanical Engineering, Jiangnan University, Wuxi 214122, China.
Molecules. 2021 Dec 10;26(24):7470. doi: 10.3390/molecules26247470.
Based on the van der Waals (vdW) interaction between carbon atoms, the interface cohesive energy between parallel single-walled carbon nanotubes was studied using continuous mechanics theory, and the influence of the diameter of carbon nanotubes and the distance between them on the cohesive energy was analyzed. The results show that the size has little effect on the cohesive energy between carbon nanotubes when the length of carbon nanotubes is over 10 nm. At the same time, we analyzed the cohesive energy between parallel carbon nanotubes with the molecular dynamics simulation method. The results of the two methods were compared and found to be very consistent. Based on the vdW interaction between parallel carbon nanotubes, the vibration characteristics of the two parallel carbon nanotube system were analyzed based on the continuous mechanical Euler-beam model. The effects of the vdW force between carbon nanotubes, the diameter and length of carbon nanotubes on the vibration frequency of carbon nanotubes was studied. The obtained results are helpful in improving the understanding of the vibration characteristics of carbon nanotubes and provide an important theoretical basis for their application.
基于碳原子间的范德华（vdW）相互作用，利用连续介质力学理论研究了平行单壁碳纳米管之间的界面内聚能，并分析了碳纳米管直径及其间距对内聚能的影响。结果表明，当碳纳米管长度超过10 nm时，尺寸对碳纳米管之间的内聚能影响较小。同时，采用分子动力学模拟方法分析了平行碳纳米管之间的内聚能。比较了两种方法的结果，发现非常一致。基于平行碳纳米管间的vdW相互作用，基于连续介质力学欧拉梁模型分析了双平行碳纳米管系统的振动特性。研究了碳纳米管间vdW力、碳纳米管直径和长度对碳纳米管振动频率的影响。所得结果有助于增进对碳纳米管振动特性的理解，并为其应用提供重要的理论基础。
