NDLI: The competition between the crack kinking away from the interface and crack propagation along the interface in elastic bicrystals

Content Provider	Springer Nature Link
Author	Nikolić, Ružica R. Djoković, Jelena M. Mićuvić, Milan V.
Copyright Year	2010
Abstract	The problem analyzed is of the crack kinking away from the interface between the two different anisotropic materials. The attention is concentrated on the initiation of the crack kinking and the condition that the length of the crack segment that is leaving the interface is small in comparison to the crack segment that remains along the interface. The emphasis is placed to the application of the fracture mechanics concept for the interfacial crack that propagates dynamically between the two orthotropic materials. The simulations and calculations were done by application of the Mathematica ® programming routine. The stress intensity factors and the energy release rate are obtained for the kinked crack, as functions of the corresponding values for the interfacial crack prior to kinking. The analysis was performed of the influence of anisotropy on the crack kinking versus crack propagating along the interface competition. Due to anisotropy the kinking is easier, i.e., it is easier for the crack to kink away from the interface into the “softer” of the two materials. The oscillatory index for the case of the dynamic crack growth along the interface between the two orthotropic materials increases with crack tip speed v and with increase of the difference in stiffnesses. The practical application of this analysis could be for the interface in the glued joints and protective coatings.
Starting Page	73
Ending Page	82
Page Count	10
File Format	PDF
ISSN	03769429
Journal	International Journal of Fracture
Volume Number	164
Issue Number	1
e-ISSN	15732673
Language	English
Publisher	Springer Netherlands
Publisher Date	2010-02-12
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Interfacial crack Crack kinking Stress and strain fields Elastic bicrystals Anisotropy Dynamic crack growth Orthotropic materials Mechanical Engineering Automotive Engineering Civil Engineering Mechanics Characterization and Evaluation of Materials
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Computational Mechanics Modeling and Simulation

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