Pull-in instability and free vibration of electrically actuated poly-SiGe graded micro-beams with a curved ground electrode

Jia, X. L., Yang, J., Kitipornchai, S. and Lim, C. W. (2012) Pull-in instability and free vibration of electrically actuated poly-SiGe graded micro-beams with a curved ground electrode. Applied Mathematical Modelling, 36 5: 1875-1884. doi:10.1016/j.apm.2011.07.080


Author Jia, X. L.
Yang, J.
Kitipornchai, S.
Lim, C. W.
Title Pull-in instability and free vibration of electrically actuated poly-SiGe graded micro-beams with a curved ground electrode
Journal name Applied Mathematical Modelling   Check publisher's open access policy
ISSN 0307-904X
1872-8480
Publication date 2012
Year available 2012
Sub-type Article (original research)
DOI 10.1016/j.apm.2011.07.080
Open Access Status
Volume 36
Issue 5
Start page 1875
End page 1884
Total pages 10
Place of publication New York, NY United States
Publisher Elsevier Inc.
Collection year 2012
Language eng
Abstract This paper investigates the pull-in instability and free vibration of functionally graded poly-SiGe micro-beams under combined electrostatic force, intermolecular force and axial residual stress, with an emphasis on the effects of ground electrode shape, position-dependent material composition, and geometrically nonlinear deformation of the micro-beam. The differential quadrature (DQ) method is employed to solve the nonlinear differential governing equations to obtain the pull-in voltage and vibration frequencies of the clamped poly-SiGe micro-beams. The present analysis is validated through direct comparisons with published experimental results and excellent agreement has been achieved. A parametric study is conducted to investigate the effects of material composition, ground electrode shape, axial residual stress and geometrical nonlinearity on the pull-in voltage and frequency characteristics.
Keyword Casimir force
Curved ground electrode
Free vibration
Functionally graded material
Geometrical nonlinearity
Pull in instability
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, 11:37:34 EST by Jeannette Watson on behalf of School of Civil Engineering