Delamination buckling and propagation analysis of honeycomb panels using a cohesive element approach

Tong Seok Han, Ani Ural, Chuin Shan Chen, Alan T. Zehnder, Anthony R. Ingraffea, Sarah L. Billington

Research output: Contribution to journalArticle

58 Citations (Scopus)


The cohesive element approach is proposed as a tool for simulating delamination propagation between a facesheet and a core in a honeycomb core composite panel. To determine the critical energy release rate (Gc) of the cohesive model, Double Cantilever Beam (DCB) fracture tests were performed. The peak strength (σc) of the cohesive model was determined from Flatwise Tension (FWT) tests. The DCB coupon test was simulated using the measured fracture parameters, and sensitivity studies on the parameters for the cohesive model of the interface element were performed. The cohesive model determined from DCB tests was then applied to a full-scale, 914 × 914 mm (36 × 36 in.) debond panel under edge compression loading, and results were compared with an experiment. It is concluded that the cohesive element approach can predict delamination propagation of a honeycomb panel with reasonable accuracy.

Original languageEnglish
Pages (from-to)101-123
Number of pages23
JournalInternational Journal of Fracture
Issue number2
Publication statusPublished - 2002 May

All Science Journal Classification (ASJC) codes

  • Computational Mechanics
  • Modelling and Simulation
  • Mechanics of Materials

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