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- W2094429095 abstract "In the present article an investigation is presented into the stability of an electro-statically deflected clamped–clamped micro-beam sandwiched by two piezoelectric layers undergoing a parametric excitation applying an AC voltage to these layers. Applying an electrostatic actuation not only deflects the micro-beam but also decreases the bending stiffness of the structure, which can lead the structure to an unstable position by undergoing a saddle node bifurcation. Utilizing an appropriate AC actuation voltage to the piezoelectric layers produces a time varying axial force, which can play the role of a stabilizer exciting the system parameter. The governing equation of the motion is a nonlinear electro-mechanically coupled type PDE, which is derived using variational principle and discretized, applying Eigen-function expansion method. The resultant is a Mathieu type equation in its damped form. Using Floquet theory for single degree of freedom system the stable and unstable regions of the problem are investigated. The effects of viscous damping and electrostatic actuation on the stable regions of the problem are also studied." @default.
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- W2094429095 date "2011-10-01" @default.
- W2094429095 modified "2023-09-25" @default.
- W2094429095 title "Stabilizing the pull-in instability of an electro-statically actuated micro-beam using piezoelectric actuation" @default.
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- W2094429095 doi "https://doi.org/10.1016/j.apm.2011.03.049" @default.
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