Large-amplitude parametric response of fluid-conveying nanotubes due to flow pulsations

Farajpour, Ali, Ghayesh, Mergen H. and Farokhi, Hamed (2020) Large-amplitude parametric response of fluid-conveying nanotubes due to flow pulsations. Microsystem Technologies, 26 (3). pp. 707-720. ISSN 0946-7076

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Abstract

In this article, the nonlinear parametric response of viscoelastic nanotubes conveying pulsatile flow is investigated. A two-parameter scale-dependent elasticity-based model is developed within the framework of a nonlocal theory with strain gradient influences. To model the effects of fluid molecules, which slip on the internal nanotube wall, on the parametric response, Karniadakis–Beskok approach is used. Viscoelastic effects are also described via Kelvin–Voigt scheme. Hamilton law, Galerkin and continuation techniques are, respectively, utilized in this analysis for obtaining, discretising and solving nonlinear coupled equations. Both subcritical and supercritical nonlinear parametric responses are examined considering various parameters such as the speed variation amplitude and frequency. The viscoelastic nanotube conveying pulsatile flow exhibits a hardening nonlinearity in the subcritical regime while it displays a softening nonlinearity in the supercritical regime.

Item Type:	Article
Subjects:	F200 Materials Science F300 Physics F500 Astronomy G400 Computer Science H600 Electronic and Electrical Engineering
Department:	Faculties > Engineering and Environment > Mechanical and Construction Engineering
Depositing User:	Elena Carlaw
Date Deposited:	11 Nov 2019 17:40
Last Modified:	23 Mar 2020 11:59
URI:	http://nrl.northumbria.ac.uk/id/eprint/41414

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