Multi-mode excitation of a clamped–clamped microbeam resonator

Mohammad I. Younis

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


We present modeling and simulation of the nonlinear dynamics of a microresonator subjected to two-source electrostatic excitation. The resonator is composed of a clamped–clamped beam excited by a DC voltage load superimposed to two AC voltage loads of different frequencies. One frequency is tuned close to the first natural frequency of the beam and the other is close to the third (second symmetric) natural frequency. A multi-mode Galerkin procedure is applied to extract a reduced-order model, which forms the basis of the numerical simulations. Time history response, Poincare’ sections, Fast Fourier Transforms FFT, and bifurcation diagrams are used to reveal the dynamics of the system. The results indicate complex nonlinear phenomena, which include quasiperiodic motion, torus bifurcations, and modulated chaotic attractors.
Original languageEnglish (US)
Pages (from-to)1531-1541
Number of pages11
JournalNonlinear Dynamics
Issue number3
StatePublished - Feb 18 2015

Bibliographical note

KAUST Repository Item: Exported on 2021-04-26
Acknowledgements: This research has been supported by KAUST.

ASJC Scopus subject areas

  • Mechanical Engineering
  • Ocean Engineering
  • Applied Mathematics
  • Control and Systems Engineering
  • Electrical and Electronic Engineering
  • Aerospace Engineering


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