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A hybrid local/non-local framework for the simulation of damage and fractureAzdoud, Yan 01 1900 (has links)
Recent advances in non-local continuum models, notably peridynamics, have spurred
a paradigm shift in solid mechanics simulation by allowing accurate mathematical representation
of singularities and discontinuities. This doctoral work attempts to extend
the use of this theory to a community more familiar with local continuum models. In
this communication, a coupling strategy - the morphing method -, which bridges local
and non-local models, is presented. This thesis employs the morphing method to ease
use of the non-local model to represent problems with failure-induced discontinuities.
First, we give a quick review of strategies for the simulation of discrete degradation,
and suggest a hybrid local/non-local alternative. Second, we present the technical
concepts involved in the morphing method and evaluate the quality of the coupling.
Third, we develop a numerical tool for the simulation of the hybrid model for fracture
and damage and demonstrate its capabilities on numerical model examples
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