Crystal plasticity finite element simulation of crack growth in single crystals

[Display omitted] •Crack propagation simulation in single crystals.•Physically based damage criterion.•Adaptive remeshing. A new method for 3D simulation of crack growth in single crystals is proposed. From Crystal Plasticity Finite Element (CPFE) computations of a pre-cracked single crystal, a dama...

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Bibliographic Details
Published in:Computational materials science 2014-11, Vol.94, p.191-197
Main Authors: Li, J., Proudhon, H., Roos, A., Chiaruttini, V., Forest, S.
Format: Article
Language:English
Subjects:
Adaptive remeshing
Computation
Computer simulation
Condensed Matter
Crack propagation
Cracks
Crystal plasticity
Exact sciences and technology
Finite element
Fracture mechanics (crack, fatigue, damage...)
Fundamental areas of phenomenology (including applications)
Materials Science
Mathematical analysis
Physics
Single crystals
Slip
Solid mechanics
Structural and continuum mechanics
Three dimensional
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Summary:[Display omitted] •Crack propagation simulation in single crystals.•Physically based damage criterion.•Adaptive remeshing. A new method for 3D simulation of crack growth in single crystals is proposed. From Crystal Plasticity Finite Element (CPFE) computations of a pre-cracked single crystal, a damage indicator based on the accumulated slip, the resolved shear stress and the normal stress on each slip system is calculated at each integration point and for every time increment. The crack growth direction is then determined in 3D by analysing the damage indicator in the region around the crack front. The crack is extended via remeshing at each propagation event. At this point the CPFE computation is restarted, using the new crack configuration. Two examples in BCC single crystals featuring different crystal orientations and slip systems show the crack propagation simulations under monotonic loading over distances comparable to the crystal size and with non-regular crack shape and path.
ISSN:0927-0256
1879-0801
DOI:10.1016/j.commatsci.2014.03.061