Modeling the coupled effects of surface layer and size effect on the static and dynamic instability of narrow nano-bridge structure

Keivani, M. and Koochi, A. and Kanani, A. and Navazi, H.M. and Abadyan, M. (2017) Modeling the coupled effects of surface layer and size effect on the static and dynamic instability of narrow nano-bridge structure. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 39 (5). pp. 1735-1744.

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Abstract

For modeling the electromechanical behavior of nano-bridge structures with slender narrow-width beam elements, not only the simultaneous effects of surface layer and size dependency should be taken into account but also corrected force models should be considered. In this paper, the instability of a narrow-width nano-bridge is studied based on strain gradient theory and Gurtin–Murdoch surface elasticity. The mid-plane stretching is incorporated in the governing equation as well as corrected force distribution. Using Rayleigh–Ritz method, a parametric analysis is conducted to examine the impacts of surface layer, size dependence, dispersion forces and structural damping on static and dynamic instability voltage of the nano-bridge. © 2016, The Brazilian Society of Mechanical Sciences and Engineering.

Item Type: Article
Additional Information: cited By 0
Uncontrolled Keywords: Force correction, Gurtin–Murdoch elasticity, Nano-bridge, Pull-in instability, Strain gradient theory
Subjects: QT physiology
Divisions: Reserach Vice-Chancellar Department
Depositing User: zahra bagheri .
Date Deposited: 20 Jun 2017 04:54
Last Modified: 28 Jun 2017 04:51
URI: http://eprints.skums.ac.ir/id/eprint/145

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