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Analysis of crack propagation in double cantilever beam tests of multidirectional laminates

de Morais, A.B. / De Moura, M.F. / Goncalves, J.P.M. / Camanho, P.P.

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 G_Ic: 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.

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Analysis of crack propagation in double cantilever beam tests of multidirectional laminates

de Morais, A.B. / De Moura, M.F. / Goncalves, J.P.M. / Camanho, P.P.

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 G_Ic: 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.

Analysis of crack propagation in double cantilever beam tests of multidirectional laminates

de Morais, A.B. / De Moura, M.F. / Goncalves, J.P.M. / Camanho, P.P.

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 G_Ic: 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.

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Title:

Analysis of crack propagation in double cantilever beam tests of multidirectional laminates

Contributors:

de Morais, A.B. (author) / De Moura, M.F. (author) / Goncalves, J.P.M. (author) / Camanho, P.P. (author)

Published in:

Mechanics of Materials ; 35 ; 641-652

Publication date:

2003

Size:

12 Seiten, 24 Quellen

ISSN:

DOI:

https://doi.org/10.1016/S0167-6636(02)00289-2

Type of media:

Article (Journal)

Type of material:

Print

Language:

English

Keywords:

Rissausbreitung , frei tragender Träger , Schichtablösung , Bruchzähigkeit , Finite-Elemente-Methode , Rechnersimulation , T-Träger , numerische Simulation , Laminat

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