Plasticity and avalanche behavior in microfracturing phenomena
Article Abstract:
A hypothetical scalar model was created to observe the dynamics of the microfracture phenomena observed in actual experiments on non-homogeneous materials such as plaster or concrete. The model is used in relation to a simulated, scale-free hierarchy of avalanche events that exhibits self-organized criticality. Results indicate that the critical steady state observed in the hypothetical model exhibits the plastic macroscopic actions readily seen in real materials.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 1997
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Dislocation multi-junctions and strain hardening
Article Abstract:
The interactions among three dislocations result in the formation of unusual elements of dislocation network topology, termed 'multi-junctions'. The existence of multi-junctions is predicted using dislocation dynamics and atomistic simulations and then their existence is confirmed by transmission electron microscopy experiments in single-crystal molybdenum.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2006
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Intermittent dislocation flow in viscoplastic deformation
Article Abstract:
Research is presented describing the interacting dislocations involved in the viscoplastic deformation of crystalline materials under stress, and how the dislocations move in a scale-free intermitten manner. The results are have been confirmed by a model that simulates interacting dislocations and successfully reproduces the main findings of the research.
Publication Name: Nature
Subject: Zoology and wildlife conservation
ISSN: 0028-0836
Year: 2001
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