Nonlinear size-dependent longitudinal vibration of carbon nanotubes embedded in an elastic medium |
| |
| Institution: | 1. School of Engineering, The University of Manchester, UK;2. Mechanical Engineering Department, System Reliability, Adaptive Structures, and Machine Acoustics, Technical University of Darmstadt, Otto-Berndt-Straße, Darmstadt, Germany;1. Department of Mechanical Engineering, Tarbiat Modares University, P.O. Box 14115–177, Tehran, Iran;2. Young Researchers and Elite Club, South Tehran Branch, Islamic Azad University, Tehran, Iran |
| |
| Abstract: | In this paper, we study the longitudinal linear and nonlinear free vibration response of a single walled carbon nanotube (CNT) embedded in an elastic medium subjected to different boundary conditions. This formulation is based on a large deformation analysis in which the linear and nonlinear von Kármán strains and their gradient are included in the expression of the strain energy and the velocity and its gradient are taken into account in the expression of the kinetic energy. Therefore, static and kinetic length scales associated with both energies are introduced to model size effects. The governing motion equation along with the boundary conditions are derived using Hamilton's principle. Closed-form solutions for the linear free vibration problem of the embedded CNT rod are first obtained. Then, the nonlinear free vibration response is investigated for various values of length scales using the method of multiple scales. |
| |
| Keywords: | Embedded carbon nanotube rod Nonlinear von Kármán strain Strain and velocity gradient theory Linear and nonlinear free vibration Method of Multiple Scales |
| 本文献已被 ScienceDirect 等数据库收录！ |
|
