Pull-in instability of nano-switches using nonlocal elasticity theory

Yang, J., Jia, X. L. and Kitipornchai, S. (2008) Pull-in instability of nano-switches using nonlocal elasticity theory. Journal of Physics D: Applied Physics, 41 3: . doi:10.1088/0022-3727/41/3/035103


Author Yang, J.
Jia, X. L.
Kitipornchai, S.
Title Pull-in instability of nano-switches using nonlocal elasticity theory
Journal name Journal of Physics D: Applied Physics   Check publisher's open access policy
ISSN 0022-3727
1361-6463
Publication date 2008-02-07
Year available 2008
Sub-type Article (original research)
DOI 10.1088/0022-3727/41/3/035103
Volume 41
Issue 3
Total pages 8
Place of publication Bristol, United Kingdom
Publisher Institute of Physics Publishing Ltd.
Collection year 2008
Language eng
Abstract This paper investigates the pull-in instability of nano-switches subjected to an electrostatic force due to an applied voltage and intermolecular force within the framework of nonlocal elasticity theory to account for the small scale effect. Both the nonlinear governing equation and boundary conditions with nonlocal effect are derived. A linear distributed load model is proposed to approximate the nonlinear intermolecular and electrostatic interactions. Closed-form solutions of critical pull-in parameters are obtained for cantilever and fixed-fixed nano-beams. The freestanding behaviour of nano-beams, which is a special case in the absence of electrostatic force, is also studied. It is found that the small scale effect contributes to the pull-in instability and freestanding behaviour of cantilever and fixed-fixed nano-beams in quite different ways. The effects of gap ratio, slenderness ratio and intermolecular force are discussed in detail as well.
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Non-UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Civil Engineering Publications
 
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Created: Wed, 29 Oct 2014, 22:05:15 EST by Jeannette Watson on behalf of School of Civil Engineering