Damped forced vibration analysis of single-walled carbon nanotubes resting on viscoelastic foundation in thermal environment using nonlocal strain gradient theory
Journal article
Authors | Malikan, Mohammad, Nguyen, Van Bac and Tornabene, Francesco |
---|---|
Abstract | In this paper, the damped forced vibration of single-walled carbon nanotubes (SWCNTs) is analyzed using a new shear deformation beam theory. The SWCNTs are modeled as a flexible beam on the viscoelastic foundation embedded in the thermal environment and subjected to a transverse dynamic load. The equilibrium equations are formulated by the new shear deformation beam theory which is accompanied with higher-order nonlocal strain gradient theory where the influences of both stress nonlocality and strain gradient size-dependent effects are taken into account. In this new shear deformation beam theory, there is no need to use any shear correction factor and also the number of unknown variables is the only one that is similar to the Euler-Bernoulli beam hypothesis. The governing equations are solved by utilizing an analytical approach by which the maximum dynamic deflection has been obtained with simple boundary conditions. To validate the results of the new proposed beam theory, the results in terms of natural frequencies are compared with the results from an available well-known reference. The effects of nonlocal parameter, half-wave length, damper, temperature and material variations on the dynamic vibration of the nanotubes, are discussed in detail. |
Keywords | Forced vibration; Single walled carbon nanotube; A new refined beam theory; Higher-order nonlocal strain gradient theory; Dynamic deflection |
Year | 2018 |
Journal | Engineering Science and Technology, an International Journal |
Publisher | Elsevier |
ISSN | 22150986 |
Digital Object Identifier (DOI) | https://doi.org/10.1016/j.jestch.2018.06.001 |
Web address (URL) | http://hdl.handle.net/10545/623017 |
hdl:10545/623017 | |
Publication dates | 01 Aug 2018 |
Publication process dates | |
Deposited | 05 Oct 2018, 10:58 |
Accepted | 01 Jun 2018 |
Rights | Archived with thanks to Engineering Science and Technology, an International Journal |
Contributors | Islamic Azad University, University of Derby and University of Bologna |
File | File Access Level Open |
File | File Access Level Open |
https://repository.derby.ac.uk/item/95580/damped-forced-vibration-analysis-of-single-walled-carbon-nanotubes-resting-on-viscoelastic-foundation-in-thermal-environment-using-nonlocal-strain-gradient-theory
Download files
27
total views40
total downloads0
views this month0
downloads this month