Dynamic analysis of composite laminates with multiple delamination using improved layerwise theory

Heung Soo Kim, Aditi Chattopadhyay, Anindya Ghoshal

Research output: Contribution to journalArticle

72 Scopus citations

Abstract

A procedure has been developed to investigate the dynamic response of composite structures, with embedded multiple delaminations. A recently developed improved layerwise composite laminate theory is extended to model composite laminates of moderately large thickness with delamination. The theory accurately predicts interlaminar shear stresses while maintaining computational efficiency. Natural frequencies and mode shapes are computed for cross-ply laminates with delaminations placed at different locations. Experiments are conducted to validate the developed theory. Numerical results indicate excellent correlation with analytical solutions and experimental results. Parametric studies are conducted to investigate the effect of delamination location, both through the thickness and in plane, and number of delaminations on the dynamic response. A potential application of the developed procedure is in structural health monitoring where accurate predictions of dynamic response in the presence of delamination are important issues.

Original languageEnglish (US)
Pages (from-to)1771-1779
Number of pages9
JournalAIAA journal
Volume41
Issue number9
DOIs
StatePublished - Sep 2003

ASJC Scopus subject areas

  • Aerospace Engineering

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