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Title: Analysis of crack propagation in double cantilever beam tests of multidirectional laminates
Author: Morais, A.B. de
De Moura, M.F.
Gonçalves, J.P.M.
Camanho, P.P.
Keywords: Laminates
Fracture toughness
Finite element models
Virtual crack closure technique
Crack growth simulation
Issue Date: 2003
Publisher: Elsevier
Abstract: This paper presents numerical analyses of crack propagation in double cantilever beam (DCB) tests of multidirectional laminates. Three-dimensional finite element models were used for application of the virtual crack closure technique and for simulation of crack growth with a progressive damage model. The analyses were concerned with three features that may affect the measurements of the mode I critical strain energy release rate GIc : residual stresses, mode-mixity and curved delamination fronts. The results showed that the effects of those features could be minimised by a proper selection of specimen stacking sequences. The suitability of other DCB specimens proposed in the literature to avoid intralaminar damage and crack jumping was also evaluated.
Peer review: yes
DOI: 10.1016/S0167-6636(02)00289-2
ISSN: 0167-6636
Appears in Collections:DEM - Artigos

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