Analysis of crack propagation in double cantilever beam tests of multidirectional laminates
Analysis of crack propagation in double cantilever beam tests of multidirectional laminates
- Mechanics of Materials, 35(7), p.641-652, 2003 .
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, modemixity 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.
LAMINATES
DELAMINATION
FRACTURE TOUGHNESS
FINITE ELEMENT MODELS
VIRTUAL CRACK CLOSURE TECHNIQUE
CRACK GROWTH SIMULATION
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, modemixity 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.
LAMINATES
DELAMINATION
FRACTURE TOUGHNESS
FINITE ELEMENT MODELS
VIRTUAL CRACK CLOSURE TECHNIQUE
CRACK GROWTH SIMULATION