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Article
Chaos in jerky flow — Experimental verification of a theoretical prediction
Sometime ago Ananthakrishna and coworkers had predicted the existence of chaos in jerky flow based on a nonlinear dynamical model consisting of the time evolution equations for three types of dislocations and ...
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Article
A Multiple Slip Plane Model for Crack-Tip Plasticity
A single slip plane dislocation dynamics based model for the brittle to ductile transition has been extended to have multiple slip planes around the crack-tip. The crack-tip plastic behaviour is studied for a ...
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Article
Dislocation simulation of brittle-ductile transition in ferritic steels
Two-dimensional discrete dislocation simulations of the crack-tip plasticity of a macrocrack-micro-crack system representing the fracture behavior in ferritic steels are presented. The crack-tip plastic zones ...
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Article
Modeling the brittle–ductile transition in ferritic steels. Part II: analysis of scatter in fracture toughness
A dislocation simulation model has been proposed to predict the brittle–ductile transition in ferritic steels in Part I. Here we extend the model to address the problem of inherent scatter in fracture toughnes...
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Article
Modeling the brittle–ductile transition in ferritic steels: dislocation simulations
We present a model for the brittle–ductile transition in ferritic steels based on two dimensional discrete dislocation simulations of crack-tip plasticity. The sum of elastic fields of the crack and the emitte...