INVESTIGATION OF FREE VIBRATION RESPONSE OF E-GLASS/EPOXY DELAMINATED COMPOSITE PLATES


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Ercopur T., GÖREN KIRAL B.

ADVANCED COMPOSITES LETTERS, vol.21, no.1, pp.5-15, 2012 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 1
  • Publication Date: 2012
  • Doi Number: 10.1177/096369351202100101
  • Journal Name: ADVANCED COMPOSITES LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.5-15
  • Keywords: Laminated composite plate, delamination, natural frequency, mode shape, FINITE-ELEMENT
  • Dokuz Eylül University Affiliated: Yes

Abstract

This paper deals with the finite element analysis of free vibration response of the delaminated composite plates. Free vibration analysis is performed by using ANSYS commercial software developing parametric input files. Natural frequency values and associated mode shapes of E-glass/epoxy composite delaminated plates are determined. Effects of delamination shape, dimension and location on the natural frequency and associated mode shapes are investigated and for the purpose of the observing the effect of the boundary conditions, cantilever and clamped-pinned delaminated composite plates are taken into consideration. Comparisons with the results in literature verify the validity of the developed models in this study. It is observed that the natural frequency decreases in the existence of the delamination and level of the decrease depends on the dimension, shape and location of the delamination.