ANALYSIS OF PULL-IN INSTABILITY OF ELECTROSTATICALLY ACTUATED CARBON NANOTUBES USING THE HOMOTOPY PERTURBATION METHOD

作者：Fakhrabadi Mir Masoud Seyyed^*; Rastgoo Abbas; Ahmadian Mohammad Taghi

来源：Journal of Mechanics of Materials and Structures, 2013, 8(8-10): 385-401.

DOI：10.2140/jomms.2013.8.385

• carbon nanotubes
• pull-in phenomenon
• nanoelectromechanical systems
• homotopy perturbation method

This paper analyzes the deflection and pull-in behaviors of cantilever and doubly clamped carbon nanotubes (CNTs) under electrostatic actuation using the homotopy perturbation method. The effects of electrostatic force and interatomic interactions on the deflection and pull-in instabilities of CNTs with different lengths, diameters, and boundary conditions are investigated in detail. The results reveal that larger diameters and shorter lengths result in higher pull-in voltages. Moreover, CNTs with doubly clamped boundary conditions, in comparison with cantilever boundary conditions, are more resistant to pull-in.

• 出版日期2013-12