Analysis of crack propagation in double cantilever beam tests of multidirectional laminates
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...
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| Other Authors: | , , |
| Format: | article |
| Language: | eng |
| Published: |
1000
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| Subjects: | |
| Online Access: | http://hdl.handle.net/10773/5287 |
| Country: | Portugal |
| Oai: | oai:ria.ua.pt:10773/5287 |
| Summary: | 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. |
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