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A phase-field fracture model of ferroelectric materials under electro-mechanical loading
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene
Universitat Politècnica de Catalunya. Departament de Matemàtica Aplicada III; Universitat Politècnica de Catalunya. LACÀN - Centre Específic de Recerca de Mètodes Numèrics en Ciències Aplicades i Enginyeria
A phase-field model is proposed for the coupled simulation of microstructure and fracture evolution in ferroelectric materials. The model is based on energetic phase-field approaches for brittle fracture and ferroelectric domain formation and evolution. The variational nature of these approaches makes their coupling very natural. However the main challenge is to encode the electro-mechanical conditions of the sharp crack faces into the phase-field framework since the crack in this model is smeared and represented by an internal layer. We develope the model for different crack face boundary conditions. Simulations show the microstructure induced by the presence of the crack. Interactions between the microstructure and the crack are investigated under different electro-mechanical loadings.
Peer Reviewed
Àrees temàtiques de la UPC::Matemàtiques i estadística::Matemàtica aplicada a les ciències
Àrees temàtiques de la UPC::Enginyeria dels materials::Materials funcionals::Materials elèctrics i electrònics
Ferroelectric devices -- Materials
Coupled simulation
Crack faces
Electro-mechanical
Ferroelectric domains
Fracture model
Internal layers
Phase fields
Phase-field approaches
Phase-field models
Sharp crack
Materials ferroelèctrics
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