Theoretical analysis on nonlinear vibration of fluid flow in single-walled carbon nanotube

In this study, the concept of nonlocal continuum theory is used to characterize the nonlinear vibration of an embedded single-walled carbon nanotube. the pasternak-type model is employed to simulate the interaction of the swnts. the parameterized perturbation method is used to solve the corresponding nonlinear differential equation. the effects of the vibration amplitude, flow velocity, nonlocal parameter, and stiffness of the medium on the nonlinear frequency variation are presented. the result shows that by increasing the winkler constant, the nonlinear frequency decreases, especially for low vibration amplitudes. in addition, it is resulted that influence of the nonlocal parameter is greater at higher flow velocities in comparison with lower flow velocities.