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HomeJournal of Nano ResearchJournal of Nano Research Vol. 61Effect of Microstructure and Surface Energy on the...

Effect of Microstructure and Surface Energy on the Static and Dynamic Characteristics of FG Timoshenko Nanobeam Embedded in an Elastic Medium

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Abstract:

This paper presents an investigation of the size-dependent static and dynamic characteristics of functionally graded (FG) Timoshenko nanobeams embedded in a double-parameter elastic medium. Unlike existing Timoshenko nanobeam models, the combined effects of surface elasticity, residual surface stress, surface mass density and Poisson’s ratio, in addition to axial deformation, are incorporated in the newly developed model. Also, the continuous gradation through the thickness of all the properties of both bulk and surface materials is considered via power law. The Navier-type solution is developed for simply supported FG nanobeam in the form of infinite power series for bending, buckling and free vibration. The obtained results agree well with those available in the literature. In addition, selected numerical results are presented to explore the effects of the material length scale parameter, surface parameters, gradient index, elastic medium, and thickness on the static and dynamic responses of FG Timoshenko nanobeams.

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Journal of Nano Research Vol. 61

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Periodical:

Journal of Nano Research (Volume 61)

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97-117

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https://doi.org/10.4028/www.scientific.net/JNanoR.61.97

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Online since:

February 2020

Authors:

Rabab A. Shanab*, Mohamed A. Attia, Salwa A. Mohamed, Norhan Alaa Mohamed

Keywords:

Bending, Functionally Graded Timoshenko Nanobeam, Modified Couple Stress Theory, Surface Energy Theory, Vibration, Winkler-Pasternak Medium

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© 2020 Trans Tech Publications Ltd. All Rights Reserved

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