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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.
Finite element models
Virtual crack closure technique
Crack growth simulation
|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.|
|Appears in Collections:||DEM - Artigos|
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