Dynamic pull-in investigation of a clamped-clamped nanoelectromechanical beam under ramp-input voltage and the Casimir force

Amir R. Askari, Masoud Tahani

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5 Citations (Scopus)


The influence of the Casimir excitation on dynamic pull-in instability of a nanoelectromechanical beam under ramp-input voltage is studied. The ramp-input actuation has applications in frequency sweeping of RF-N/MEMS. The presented model is nonlinear due to the inherent nonlinearity of electrostatics and the Casimir excitations as well as the geometric nonlinearity of midplane stretching. A Galerkin based reduced order modeling is utilized. It is found that the calculated dynamic pull-in ramp input voltage leads to dynamic pull-in step input voltage by increasing the slope of voltage-time diagram. This fact is utilized to verify the results of present study.

Original languageEnglish
Article number164542
Number of pages6
JournalShock and Vibration
Publication statusPublished - 14 May 2014
Externally publishedYes

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