Abstract
Various modifications of the face/core interface in foam core sandwich specimens are examined in a series of two papers. This paper constitutes part I and describes the finite element analysis of a sandwich test specimen, i.e. a DCB specimen loaded by uneven bending moments (DCB-UBM). Using this test almost any mode-mixity between pure mode I and mode II can be obtained. A cohesive zone model of the mixed mode fracture process involving large-scale bridging is developed. Results from the analysis are used in Part II, which describes methods and results of a series of experiments.
Original language | English |
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Journal | Applied Composite Materials |
Volume | 17 |
Issue number | 6 |
Pages (from-to) | 609-619 |
ISSN | 0929-189X |
DOIs | |
Publication status | Published - 2010 |
Keywords
- Crack kinking
- Cohesive zone modeling
- Fracture resistance
- Sandwich structures