A non-linear finite element approach for the analysis of mode-I free edge delamination in composites

J.C.J. Schellekens, R. Borst, de

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Abstract

Free edge delamination of uniaxially stressed layered specimens is simulated using non-linear finite element analysis. Generalized plane strain elements and interface elements have been developed for this purpose. Thermal and hygroscopic effects have been taken into account for the modelling of the plys, and a mode-I fracture model which incorporates strain softening has been used for the interface behaviour. The out-of-plane loading is controlled via an indirect displacement control technique, which permits tracing the entire loading history. Using non-linear finite element analysis free edge delamination in different graphite/epoxy laminates is examined. The numerical results are in good agreement with experimental evidence and do not suffer from spurious mesh dependence. Also the effects of laminate thickness (size effect) can be described properly.
Original languageEnglish
Pages (from-to)1239-1253
JournalInternational Journal of Solids and Structures
Volume30
Issue number9
DOIs
Publication statusPublished - 1993

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Nonlinear Finite Element
Delamination
Laminates
Composite
Displacement control
Strain Softening
Finite element method
Interface Element
laminates
composite materials
Graphite
Size Effect
Epoxy
Plane Strain
Composite materials
Tracing
plane strain
Mesh
Entire
tracing

Cite this

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title = "A non-linear finite element approach for the analysis of mode-I free edge delamination in composites",
abstract = "Free edge delamination of uniaxially stressed layered specimens is simulated using non-linear finite element analysis. Generalized plane strain elements and interface elements have been developed for this purpose. Thermal and hygroscopic effects have been taken into account for the modelling of the plys, and a mode-I fracture model which incorporates strain softening has been used for the interface behaviour. The out-of-plane loading is controlled via an indirect displacement control technique, which permits tracing the entire loading history. Using non-linear finite element analysis free edge delamination in different graphite/epoxy laminates is examined. The numerical results are in good agreement with experimental evidence and do not suffer from spurious mesh dependence. Also the effects of laminate thickness (size effect) can be described properly.",
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A non-linear finite element approach for the analysis of mode-I free edge delamination in composites. / Schellekens, J.C.J.; Borst, de, R.

In: International Journal of Solids and Structures, Vol. 30, No. 9, 1993, p. 1239-1253.

Research output: Contribution to journalArticleAcademicpeer-review

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