Structural behavior of a multi-layer based microbeam actuator

Abdulrahman Alofi, Hassen M. Ouakad*, Mohammad Tausiff

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)


In this paper, the structural behavior of a micro-electromechanical system (MEMS) composed of two electrically coupled parallel clamped-clamped microbeams is investigated. An Euler Bernoulli beam model is considered along with the nonlinear electric actuating force to get the equation of motion governing the structural behavior of the actuator. A reduced-order modeling (ROM) based on the Galerkin expansion technique, while assuming linear undamped mode shapes of a straight fixed-fixed beam as the basis functions, is assumed as a discretization technique of the equations of motion in this investigation. The results showed that the double-microbeam MEMS actuator configuration requires a lower actuation voltage and a lower switching time as compared to the single microbeam actuator. Then, the effects of both microbeams air gap depths were investigated. Finally, the eigenvalue problem was investigated to get the variation of the fundamental natural frequencies of the coupled parallel microbeams with the applied actuating DC load.

Original languageEnglish
Article number22
Issue number3
Publication statusPublished - Sept 1 2016
Externally publishedYes


  • Actuator
  • Electrically-coupled parallel microbeams
  • MEMS
  • Multi-layers
  • Nonlinear structural behavior

ASJC Scopus subject areas

  • Control and Systems Engineering
  • Control and Optimization


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