A meshfree penalty-based approach to delamination in composites

Ettore Barbieri, Michele Meo

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

Cohesive models have been successfully employed to simulate delamination in composites, since they can provide accurate description of both onset and propagation. The key parameter of a cohesive model is interpreted in this work as a penalty parameter to fully exploit the many advantages of meshfree techniques. This penalty factor is then modified according to the cohesion strength between the parts, depending on a softening law to track the damage state of the layers interface and to prevent the restoration of the undamaged cohesive state during unloading. The approach is used for simulating the steady-state evolution of delamination in composite structures for quasi-static loading modes I and II. To demonstrate the validity of the proposed methodology, the results were compared with experimental data showing promising accuracy and robustness.
Original languageEnglish
Pages (from-to)2169-2177
Number of pages9
JournalComposites Science and Technology
Volume69
Issue number13
DOIs
Publication statusPublished - Oct 2009

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Delamination
Composite materials
Composite structures
Unloading
Restoration

Keywords

  • Key parameters
  • Cohesive model
  • Experimental data
  • Damage state
  • Meshfree technique
  • Penalty factor
  • Meshfree
  • Steady-state evolution
  • Quasi-static loading
  • Penalty parameters
  • Cohesion strength

Cite this

A meshfree penalty-based approach to delamination in composites. / Barbieri, Ettore; Meo, Michele.

In: Composites Science and Technology, Vol. 69, No. 13, 10.2009, p. 2169-2177.

Research output: Contribution to journalArticle

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