11 research outputs found
IMECE2009-10157 Contact Time Study of Microsystems Actuated by Ramp-Input Voltages
Get PDFABSTRACT This paper presents a model to analyze contact phenomenon in microsystems, actuated by ramp voltages, which has applications in frequency sweeping. First-order shear deformation theory is used to model dynamical system using finite element method, while finite difference method is applied to model squeeze film damping. The model is validated by static pull-in results. The presented hybrid FEM-FDM model is utilized to compute values of contact time and dynamic behavior. Considering this model, effects of different geometrical and mechanical parameters on contact time are studied. The influence of imposing the additional reverse voltage on dynamic characteristics of the system is also investigated. It is shown that magnitude and position of applying the reverse voltage is very important in preventing pull-in instability
Novel equivalent function for deadzone nonlinearity: applied to analytical solution of beam vibration using He's Parameter Expanding Method
Full text linkModeling the size dependent pull-in instability of beam-type NEMS using strain gradient theory
Full text linkVibrational analysis of electrostatically actuated microstructures considering nonlinear effects
No full textDynamic pull-in and snap-through behavior of electrostatically actuated micro-mechanical memories considering thermoelastic damping
No full textDynamic pull-in instability of electrostatically actuated beams incorporating Casimir and van der Waals forces
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Application of the variational iteration method to nonlinear vibrations of nanobeams induced by the van der Waals force under different boundary conditions
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Dynamic Analysis of Rectangular Micro-plates Under Mechanical Shock in Presence of Electrostatic Actuation
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