Journal
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
Volume 38, Issue 8, Pages 2994-3003Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.jeurceramsoc.2018.01.035
Keywords
Phase field model of fracture; Cohesive zone model; Crack deflection; Crack branching; Laminates
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Funding
- European Research Council under the European Union [737447]
- Spanish Ministry of Economy and Competitiveness [FEDERMAT2015-71036-P]
- Andalusian Government Project of Excellence [P12-TEP-1050]
- European Research Council (ERC) [737447] Funding Source: European Research Council (ERC)
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The competition between crack penetration in the layers and cohesive delamination along interfaces is herein investigated in reference to laminate ceramics, with special attention to the occurrence of crack deflection and crack branching. These phenomena are simulated according to a recent variational approach coupling the phase field model for brittle fracture in the laminae and the cohesive zone model for quasi-brittle interfaces. It is shown that the proposed variational approach is particularly suitable for the prediction of complex crack paths involving crack branching, crack deflection and cohesive delamination. The effect of different interface properties on the predicted crack path tortuosity is investigated and the ability of the method to simulate fracture in layered ceramics is proven in relation to experimental data taken from the literature.
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