Reduction methods for MEMS nonlinear dynamic analysis

Paolo Tiso, Daniel J. Rixen

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

12 Scopus citations

Abstract

Practical MEMS applications feature non-linear effects that are important to be realistically simulated. This typically involves large dynamic non-linear finite element (FE) models, and therefore efficient model reduction techniques are of great need. Proper Orthogonal Decomposition (POD) is a well-known technique for the effective order reduction of large dynamic (non-linear) systems. POD does not require any knowledge of the system at hand but features the disadvantage of the need of running a full simulation to extract the reduction basis. On the other hand, a basis constituted by few vibration modes enriched with modal derivatives (MD) can describe the main effect of nonlinearity without the need of a full model solution. We present a comparison of the two described reduction methods (POD and MD) applied to a geometircally non-linear micro-beam subjected to electrostatic forces.

Original languageEnglish
Title of host publicationNonlinear Modeling and Applications - Proceedings of the 28th IMAC, A Conference on Structural Dynamics, 2010
PublisherSpringer New York LLC
Pages53-65
Number of pages13
ISBN (Print)9781441997180
DOIs
StatePublished - 2011
Externally publishedYes

Publication series

NameConference Proceedings of the Society for Experimental Mechanics Series
Volume2
ISSN (Print)2191-5644
ISSN (Electronic)2191-5652

Keywords

  • Finite element
  • MEMS
  • Modal derivatives
  • Model order reduction
  • Non-linear dynamics
  • Proper orthogonal decomposition

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