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Numerical Analysis of a Three Element Microbeam Array Subject to Electrodynamical Parametric Excitation

[+] Author Affiliations
Stefanie Gutschmidt

University of Liège, Liège, Belgium

Oded Gottlieb

Technion-Israel Institute of Technology, Haifa, Israel

Paper No. ESDA2008-59342, pp. 673-681; 9 pages
doi:10.1115/ESDA2008-59342
From:
  • ASME 2008 9th Biennial Conference on Engineering Systems Design and Analysis
  • Volume 2: Automotive Systems; Bioengineering and Biomedical Technology; Computational Mechanics; Controls; Dynamical Systems
  • Haifa, Israel, July 7–9, 2008
  • Conference Sponsors: International
  • ISBN: 978-0-7918-4836-4 | eISBN: 0-7918-3827-7
  • Copyright © 2008 by ASME

abstract

The dynamic response of parametrically excited microbeam arrays is governed by nonlinear effects which directly influence their performance. To date, documented theoretical models consist of lumped-mass models. While a lumped-mass approach is useful for a qualitative understanding of the system response it does not resolve the spatio-temporal interaction of the individual elements in the array. Thus, we employ a consistent nonlinear continuum model to investigate the nonlinear dynamic behavior of an array of N nonlinearly coupled microbeams. Investigations focus on the behavior of a small size array in its 1:1:1 internal, parametric, and 3:1 internal resonances, which correspond to low, medium and high DC-voltage input, respectively. The dynamic equations of motion are solved numerically. The dynamic behavior of the three beam systems reveals coexisting periodic and aperiodic solutions. Similarities in the comprehensive bifurcation structures of the three beam systems provide insight to the nearest neighbor response of multi-element microbeam arrays subject to electrodynamic parametric excitation.

Copyright © 2008 by ASME

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