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Dynamic behaviours of carbon nanotubes under dc voltage based on strain gradient theory

Fakhrabadi, M. M. S ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1088/0022-3727/46/40/405101
  3. Publisher: 2013
  4. Abstract:
  5. The paper deals with scrutinizing the vibration and dynamic pull-in behaviours of carbon nanotubes with different dimensions and boundary conditions. The strain gradient theory as a nonclassical elasticity theorem is applied in this research to compensate the limitations of the classical theories in predicting the mechanical behaviours of the micro- and nanostructures in general and carbon nanotubes, in particular under electrostatic actuation. The results reveal that the mechanical properties of carbon nanotube (CNTs) computed using the strain gradient theory differ significantly with those obtained from the classical theory. The strain gradient theory leads to higher stiffness and pull-in voltages for CNTs
  6. Keywords:
  7. Classical theory ; Dynamic behaviours ; Dynamic pull-in ; Electrostatic actuation ; Mechanical behaviour ; Micro and nanostructures ; Pull-in voltage ; Strain gradient theory ; Carbon nanotubes ; Elasticity ; Electrostatic actuators ; Strain
  8. Source: Journal of Physics D: Applied Physics ; Volume 46, Issue 40 , 2013 ; 00223727 (ISSN)
  9. URL: http://iopscience.iop.org/article/10.1088/0022-3727/46/40/405101/meta