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Analysis of pull-in
instability of electrostatically actuated carbon nanotubes
using the homotopy perturbation method
Mir Masoud Seyyed Fakhrabadi, Abbas Rastgoo and Mohammad Taghi Ahmadian |
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Vol. 8 (2013), No. 8-10, 385–401
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Abstract |
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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. |
Keywords
carbon nanotubes, pull-in phenomenon, nanoelectromechanical
systems, homotopy perturbation method
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Milestones
Received: 8 February 2013
Revised: 20 June 2013
Accepted: 1 October 2013
Published: 30 December 2013
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Authors |
| Mir Masoud Seyyed Fakhrabadi | |
| Karaj Branch Islamic Azad University Karaj Iran |
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| Abbas Rastgoo | |
| School of Mechanical
Engineering College of Engineering University of Tehran Tehran Iran |
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| Mohammad Taghi Ahmadian | |
| Department of Mechanical
Engineering Sharif University of Technology Tehran 11365-9567 Iran |
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