Interlaminar stresses and energy release rates in delaminated orthotropic composite plates

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22 Citations (Scopus)


The classical laminated plate theory is applied to calculate the stresses and energy release rate function in symmetrically delaminated orthotropic plates. First, the equilibrium of classical plate forces, moments and interfacial shear stresses is formulated. Second, the displacement continuity between the interface plane of a double-plate model was considered. The governing equation system of the double-plate model consists of ten equations. As an example a delaminated, orthotropic, simply-supported plate subjected to a point force is analyzed. The distribution of the plate forces as well as the interlaminar shear stresses over the uncracked part were determined. Moreover, the mode-II and mode-III energy release rate distributions along the crack front were calculated by the J-integral. The 3D finite element model of the delaminated composite plate was also created. The results indicate a reasonably good agreement between analysis and numerical calculation.

Original languageEnglish
Pages (from-to)2460-2470
Number of pages11
JournalInternational Journal of Solids and Structures
Issue number18
Publication statusPublished - Sep 15 2012


  • Delamination
  • Energy release rate
  • J-integral
  • Laminated plate
  • Mixed mode II/III fracture

ASJC Scopus subject areas

  • Modelling and Simulation
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering
  • Applied Mathematics

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