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Dispersion relation for transverse waves in pre-stressed irregular single-walled carbon nanotubes
Physica Scripta ( IF 2.9 ) Pub Date : 2020-10-22 , DOI: 10.1088/1402-4896/abc0c4
Mahmoud M Selim

This article studies the dispersion relation of transverse waves in an initially stresses single-walled carbon nanotube (SWCNT) with surface irregularity using Flgge shell theory. Taking into account the effects of surface irregularity and initial stresses, propagation of transverse waves is studied and dispersion curves are plotted for optical transverse waves in several figures. The effects of surface irregularity and initial stresses are confirmed by comparing obtained numerical results with those in cases of uniform and initial stress–free SWCNT. Obtained results turn out that, the increase of irregularity parameter increases the phase velocity of transverse waves, while the increase of the initial stress parameter decreases the phase velocity of transverse waves propagating in SWCNTs. To the author best knowledge, effects of surface irregularity and initial stresses on transverse waves propagation, especially propagation in single-walled carbon nanotubes, have not been done before. The previous studies were devoted to the uniform and initial stresses-free carbon nanotubes. It should be emphasized that the transverse waves propagation in pre-stressed and irregular single-walled carbon nanotubes is novel, workable, and at the beginning of the path. İn this manner, understanding the influences of surface irregularity as well as initial stresses on the phase velocity of transverse waves may serve as useful references for the applications and designs of nano oscillators and nanodevices, in which single-walled carbon nanotubes act as the most prevalent nanocomposite structural element.



中文翻译:

预应力不规则单壁碳纳米管中横波的色散关系

本文使用 Flgge 壳理论研究了具有表面不规则性的初始应力单壁碳纳米管 (SWCNT) 中横波的色散关系。考虑到表面不规则性和初始应力的影响,研究了横波的传播,并在几个图中绘制了光学横波的色散曲线。通过将获得的数值结果与均匀和无初始应力单壁碳纳米管情况下的数值结果进行比较,确认了表面不规则和初始应力的影响。结果表明,不规则参数的增加增加了横波的相速度,而初始应力参数的增加降低了在单壁碳纳米管中传播的横波的相速度。据作者所知,表面不规则性和初始应力对横波传播的影响,尤其是在单壁碳纳米管中的传播,以前从未有人做过。以前的研究致力于均匀和无初始应力的碳纳米管。需要强调的是,横波在预应力和不规则单壁碳纳米管中的传播是新颖的、可行的,并且处于路径的起点。通过这种方式,了解表面不规则性以及初始应力对横波相速度的影响可以作为纳米振荡器和纳米器件的应用和设计的有用参考,其中单壁碳纳米管是最普遍的纳米复合结构元件。特别是在单壁碳纳米管中的传播,以前从未做过。以前的研究致力于均匀和无初始应力的碳纳米管。需要强调的是,横波在预应力和不规则单壁碳纳米管中的传播是新颖的、可行的,并且处于路径的起点。通过这种方式,了解表面不规则性以及初始应力对横波相速度的影响可以作为纳米振荡器和纳米器件的应用和设计的有用参考,其中单壁碳纳米管是最普遍的纳米复合结构元件。特别是在单壁碳纳米管中的传播,以前从未做过。以前的研究致力于均匀和无初始应力的碳纳米管。需要强调的是,横波在预应力和不规则单壁碳纳米管中的传播是新颖的、可行的,并且处于路径的起点。通过这种方式,了解表面不规则性以及初始应力对横波相速度的影响可以作为纳米振荡器和纳米器件的应用和设计的有用参考,其中单壁碳纳米管是最普遍的纳米复合结构元件。需要强调的是,横波在预应力和不规则单壁碳纳米管中的传播是新颖的、可行的,并且处于路径的起点。通过这种方式,了解表面不规则性以及初始应力对横波相速度的影响可以作为纳米振荡器和纳米器件的应用和设计的有用参考,其中单壁碳纳米管是最普遍的纳米复合结构元件。需要强调的是,横波在预应力和不规则单壁碳纳米管中的传播是新颖的、可行的,并且处于路径的起点。通过这种方式,了解表面不规则性以及初始应力对横波相速度的影响可以作为纳米振荡器和纳米器件的应用和设计的有用参考,其中单壁碳纳米管是最普遍的纳米复合结构元件。

更新日期:2020-10-22
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