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Analyse de l’effet de pression sur les caractéristiques vibratoire des SWNT.

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Academic year: 2021

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Université Djilali lyabes de sidi belabbes Faculté des sciences exactes

Département de Physique Spécialité : Physique

Option : Physique des Matériaux Avancés à multi-échelles Mr Benlatreche Moussa

Grade : Magister

Email : belletrechemoussa@yahoo.fr Moussa-83@live.fr

Abstract:

This paper studied the vibrational characteristics of single-walled carbon nanotubes (SWNTs) with initial axial loading based on the theory of nonlocal elasticity. The consistent of equation of motion for the nonlocal Euler Bernoulli and Timoshenko beam models are provided taking into account the initial axial stress. The small scale effect on CNT wave propagation dispersion relation is explicitly revealed for different CNT wave numbers and diameters by theoretical analyses and numerical simulations. In addition, the applicability of the two beam models is explored by numerical simulations. The research work reveals the significance of the effects of small scale, transverse shear deformation and rotary inertia on wave propagation in short SWNTS with initial axial loading.

Résumé:

Ce manuel étudie les caractéristiques de vibrations des SWNTs les nanotubes de carbone monoparoi avec une charge axiale initiale, l’étude est basée sur la théorie d’élasticité nonlocale. L’effet du paramètre d’échelle sur les caractéristiques de vibration des SWNTs est pris pour différentes valeurs du nombre du mode et diamètre de nanotube .ce travail de recherche montre l’effet significatif du paramètre d’échelle, la déformation transversale et l’inertie de rotation sur les caractéristiques de vibration des SWNTs.

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صخلملا

:

عضخت ٌتلاو ًشتموواىلا ىوتسملا ٌف نوتشكلا ةَتاولأ حٍصاضتهلاا صاوخلا حَلاتلا حساسذلا حضوت حٍسوحم حلومحل . حٍشظو يلع حساسذلا ضكشتت ... طاقملا شثا ( نوتشكلا خاسر هَت ذعثلا ) شطقو ًصاضتهلاا دذعلل جشَغتم مَق لجا هم مت صاوخلا يزه يلع بوثولأا . ضئاصخلا يلع ناسوذلا حلاطع و ٌضشعلا يوشتلا طاقملل شثتعملا شثلأا ثحثلا ازه هَت ذقل حٍصاضتهلاا .

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