Using Green Function Method to Dynamic Analysis of Nanotubes Conveying Fluid Under Moving Load

Document Type : Research Article

Authors

Department of Mechanical Engineering, Sirjan University of Technology, Sirjan, Iran

Abstract

ABSTRACT: In this paper, the dynamic response of carbon nanotubes (CNT) conveying fluid under moving
harmonic load by using the Green function method is investigated. The results of this analysis are obtained for four
different boundary conditions, namely fixed- fixed, fixed- pinned, pinned- fixed and pinned -pinned. The harmonic
load is assumed to travel with uniform velocity, accelerating and decelerating types of motion and the internal fluid
flow is moved with uniform velocity. The Green function and Laplace transform method is implemented to analysis
of force vibrations for achieving exact solutions of dynamic response. In the present work, the effects of various
parameters such as viscoelastic coefficient, moving load and fluid flow velocity, length scale parameter, boundary
conditions, viscous damping and types of the load motion on the dynamic displacement of the CNT are elucidated.
However, the results show that these parameters are vital in investigation of the dynamic displacement of CNT. It is
obvious that the dynamic deflection is very sensitive to the material length scale parameter in which structural stiffness
of CNT and the dimensionless dynamic displacements, respectively, is decreased and increased with increases in the
length scale parameter.

Keywords

Main Subjects

References

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Amirkabir Journal of Mechanical Engineering
Volume 50, Issue 1
May and June 2018
Pages 137-150

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