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

Ali Farajpour*, Mergen H. Ghayesh, Hamed Farokhi

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Pages (from-to)707-720
Number of pages14
JournalMicrosystem Technologies
Volume26
Issue number3
Early online date10 Sep 2019
DOIs
Publication statusPublished - Mar 2020

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