Journal
JOURNAL OF ALLOYS AND COMPOUNDS
Volume 820, Issue -, Pages -Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2019.153378
Keywords
Interface fracture; C/C composites; Cohesive crack model; Constitutive parameters
Categories
Funding
- National Natural Science Foundation of China [51772245, 51821091]
Ask authors/readers for more resources
An eight-node zero-thickness element is developed to numerically model the interfacial fracture behaviors of carbon fibers reinforced pyrocarbon (C/C) composites. The constitutive parameters of the developed element are characterised on the basis of the DCB test and three-point ENF test with a novel data reduction approach. A bilinear mixed-mode constitutive criterion is adopted to define the damage initiation and evolution of the interface and the viscous regularization strategy is used to deal with the convergence difficulty in the implicit FE solver. The effects of the interfacial stiffness, the element length and the viscous coefficient on the interfacial fracture behaviors of C/C composites are explored. In addition, a set of angle-ply laminate DCB models of C/C composites are simulated and compared with the experimental tests to validate the effectiveness of the developed cohesive element for modelling the interfacial fracture behaviors of C/C composites. The results show that the proposed interface element with the determined constitutive parameters in this paper can accurately predict the interfacial fracture behaviors of C/C composites. (C) 2019 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available