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Title: Mixed mode I + II interlaminar fracture of glass/epoxy multidirectional laminates - Part 1: Analysis
Author: Morais, A.B. de
Pereira, A.B.
Keywords: Polymer-matrix composites (PMCs)
Fracture toughness
Finite element analysis (FEA)
Issue Date: 2006
Publisher: Elsevier
Abstract: An analytical study was conducted on mixed mode bending (MMB) glass/epoxy multidirectional specimens with delaminations in 0/theta and theta/-theta type interfaces. Three-dimensional finite element models and the virtual crack closure technique (VCCT) were used to evaluate a modified beam theory (MBT) data reduction scheme. The specimen compliance and total strain energy release rate G were accurately predicted by MBT, and there were only small mode partitioning differences relative to VCCT for 0/theta specimens. Moreover, VCCT mode partitioning for 0/45 and 0/90 specimens rapidly converged to MBT predictions for increasing crack closure increments of the order of the fracture process zone.
Peer review: yes
DOI: 10.1016/j.compscitech.2006.04.006
ISSN: 0266-3538
Appears in Collections:DEM - Artigos

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