Dynamic Response of Viscoelastic CNT Conveying Pulsating Fluid Considering Surface Stress and Magnetic Field

Abstract

A viscoelastic carbon nanotube (CNT) conveying pulsating fluid is presented which is based on EulerBernoulli beam theory. Runge-Kutta scheme is chosen in order to illustrate the transverse and longitudinal behavior of structure. The effects of surface stress, magnetic field and nonlocal small-scale theory on motion of structure are expressed in this study. Equilibrium equations of CNT conveying pulsating fluid are obtained using energy method. Galerkin, differential quadrature and Runge-Kutta methods are applied to solve equations of motion. In this paper, the effect of pulsating fluid on longitudinal behavior of CNT and transverse displacement of CNT are presented. The static and dynamic transverse distributed loads and their effects on CNT are expressed. In this study, regions of CNT with chaotic, quasi-periodic and periodic behaviors are presented. Also the effects of various parameters such as distributed loads, surface stress and magnetic field on those regions are demonstrated. The results of this work could be helpful in design and manufacturing of nano-/micromechanical system in advanced medical applications such as drug delivery systems with magnetic field as a parametric controller.

Torsional Vibration Analysis of Carbon Nanotubes Using Maxwell and Kelvin-Voigt Type Viscoelastic Material Models

“…Karlicic et al [17] investigated axial magnetic field effect on dynamics of the nanocomposites which were consist of multiple viscoelastic nanotubes and polymer as a matrix material. Arani et al [18] studied the dynamics of fluid conveying viscoelastic CNTs with two dimensional magnetic field effect. Farokhi and Gayesh [19] investigated the shear deformable viscoelastic microbeams with modified couple stress theory.…”