Non-linear vibration analysis of smart composite structures with discrete delamination using a refined layerwise theory

Aditi Chattopadhyay, H. S. Kim, A. Ghoshal

Research output: Contribution to journalArticle

59 Scopus citations

Abstract

A non-linear vibration analysis procedure has been developed to investigate the dynamic response of composite laminates with embedded and/or surface bonded piezoelectric sensors and multiple finite/discrete delaminations. The objective is to accurately predict the sensor output in the time domain. A recently developed refined layerwise composite theory is used to develop the piezoelectric-mechanical model. A two-way coupled electro-mechanical formulation is used to derive the equations of motion. An adaptive non-linear transient implicit algorithm is used to generate the voltage time history, which is useful in characterizing the presence of delamination. The contact problem of delaminated interfacial surfaces is modelled in terms of fictitious linear springs to provide an accurate description of the transient behavior. The accuracy of the model is validated through comparison with experimental results. The validity of low frequency vibration analysis in detection of delamination(s) from in-situ sensor outputs is also established. It is anticipated that the developed framework will be a useful tool in structural health monitoring studies.

Original languageEnglish (US)
Pages (from-to)387-407
Number of pages21
JournalJournal of Sound and Vibration
Volume273
Issue number1-2
DOIs
StatePublished - May 21 2004

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Mechanics of Materials
  • Acoustics and Ultrasonics
  • Mechanical Engineering

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