The Dynamic Pull-In Instability and Snap-Through Behavior of Initially Curved Microbeams

In this study, dynamic pull-in instability and snap-through buckling of initially curved microbeams are investigated. The microbeams are actuated by suddenly applied electrostatic force. A finite element model is developed to discretize the governing equations, and Newmark time discretization is emp...

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Bibliographic Details
Published in:Mechanics of advanced materials and structures 2012-09, Vol.19 (6), p.485-491
Main Author: Zand, M. Moghimi
Format: Article
Language:English
Subjects:
dynamic pull-in
finite difference method
finite element method
MEMS
nonlinearity
snap-through
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Summary:In this study, dynamic pull-in instability and snap-through buckling of initially curved microbeams are investigated. The microbeams are actuated by suddenly applied electrostatic force. A finite element model is developed to discretize the governing equations, and Newmark time discretization is employed to solve the discretized equations. The static pull-in behavior is investigated to validate the model. The results of the finite element model are compared with finite difference solutions and their convergence is examined. In addition, the influence of different parameters on dynamic pull-in instability and snap-through buckling is explored.
ISSN:1537-6494
1537-6532
DOI:10.1080/15376494.2011.556836