Effect of delamination on transient history of smart composite plates

Anindya Ghoshal, Heung Soo Kim, Aditi Chattopadhyay, William H. Prosser

Research output: Contribution to journalArticle

38 Scopus citations

Abstract

The transient analysis of delaminated composite and smart composite plates is studied using a newly developed improved layerwise laminate theory, extended to include large deformation and the interlaminar contact during 'breathing' phenomena in the delaminated zone. The theory is capable of capturing interlaminar shear stresses that are critical to delamination. The presence of multiple, discrete delaminations is modeled through the use of Heaviside step functions. Stress free boundary conditions are enforced at all free surfaces and continuity in displacement field and transverse shear stresses are enforced at each ply level. In modeling piezoelectric composite plates, a coupled piezoelectric-mechanical formulation is used in the development of the constitutive equations. Numerical analysis is conducted to investigate the effect of nonlinearity in the transient vibration, attributable to large displacements and rotations and to the coupled effect of the large deformation and bimodular behavior caused by the contact impact of delaminated interfaces. Composite plates with delaminations, subject to external loads and voltage history from surface bonded sensors, are investigated and the results are compared with corresponding linear transient history, experimental results and plates without delamination.

Original languageEnglish (US)
Pages (from-to)850-874
Number of pages25
JournalFinite Elements in Analysis and Design
Volume41
Issue number9-10
DOIs
StatePublished - May 1 2005

ASJC Scopus subject areas

  • Analysis
  • Engineering(all)
  • Computer Graphics and Computer-Aided Design
  • Applied Mathematics

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