Exploració per autor "Abdollahi Hosnijeh, Amir"
Ara es mostren els items 13-24 de 24
-
Modeling and simulation of conducting crack propagation in ferroelectric single crystals under purely electrical loading
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (CIMNE, 2013)
Text en actes de congrés
Accés obertWe present a phase-field model of fracture in ferroelectric single crystals for the simulation of conducting crack propagation under purely electrical loading. This is done by introducing the electrical enthalpy of a diffuse ... -
Modeling and simulation of conducting crack propagation in ferroelectric single crystals under purely electrical loading
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (2013)
Text en actes de congrés
Accés obertWe present a phase-field model of fracture in ferroelectric single crystals for the simulation of conducting crack propagation under purely electrical loading. This is done by introducing the electrical enthalpy of a diffuse ... -
Numerical simulation of intergranular and transgranular crack propagation in ferroelectric polycrystals
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (2011)
Text en actes de congrés
Accés restringit per política de l'editorialWe present a phase-field model to simulate intergranular and transgranular crack propagation in ferroelectric polycrystals. The proposed model couples three phase-fields describing (1) the polycrystalline structure, (2) ... -
Numerical simulations of vickers indentation crack growth in ferroelectric single crystals: effect of microstructure on the fracture process
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (CIMNE, 2011)
Text en actes de congrés
Accés obertFerroelectric materials exhibit strong electro-mechanical coupling which make them ideal materials for use in electro-mechanical devices such as sensors, actuators and transducers. To assure optimum reliability of these ... -
Phase-field modeling of crack propagation in piezoelectric and ferroelectric materials with different electromechanical crack conditions
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (2012-12)
Article
Accés obertWe present a family of phase-field models for fracture in piezoelectric and ferroelectric materials. These models couple a variational formulation of brittle fracture with, respectively, (1) the linear theory of piezoelectricity, ... -
Phase-field modeling of fracture in ferroelectric materials
Abdollahi Hosnijeh, Amir (Universitat Politècnica de Catalunya, 2012-10-18)
Tesi
Accés obertThe unique electro-mechanical coupling properties of ferroelectrics make them ideal materials for use in micro-devices as sensors, actuators and transducers. Nevertheless, because of the intrinsic brittleness of ferroelectrics, ... -
Phase-field modeling of fracture in ferroelectric materials
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (2015-04-01)
Article
Accés obertThis paper presents a family of phase-field models for the coupled simulation of the microstructure formation and evolution, and the nucleation and propagation of cracks in single and polycrystalline ferroelectric materials. ... -
Phase-field modeling of the coupled microstructure and fracture evolution in ferroelectric single crystals
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (2011-07)
Article
Accés restringit per política de l'editorialWe propose a phase-field model for the coupled simulation of microstructure formation and evolution, and the nucleation and propagation of cracks in single-crystal ferroelectric materials. The model naturally couples two ... -
Phase-field simulation of anisotropic crack propagation in ferroelectric single crystals: effect of microstructure on the fracture process
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (2011)
Article
Accés obertCrack propagation during the indentation test of a ferroelectric single crystal is simulated using a phase- eld model. This model is based on variational formulations of brittle crack propagation and domain evolution in ... -
Piezoelectric mimicry of flexoelectricity
Abdollahi Hosnijeh, Amir; Vazquez Sancho, Fabian; Catalan, Gustau (American Institute of Physics (AIP), 2018-11-15)
Article
Accés obertThe origin of “giant” flexoelectricity, orders of magnitude larger than theoretically predicted, yet frequently observed, is under intense scrutiny. There is mounting evidence correlating giant flexoelectriclike effects ... -
Revisiting pyramid compression to quantify flexoelectricity: a three-dimensional simulation study
Abdollahi Hosnijeh, Amir; Millán, Daniel; Peco, Christian; Arroyo Balaguer, Marino; Arias Vicente, Irene (2015-03-03)
Article
Accés obertFlexoelectricity is a universal property of all dielectrics by which they generate a voltage in response to an inhomogeneous deformation. One of the controversial issues in this field concerns the magnitude of flexoelectric ... -
Three-dimensional simulation of crack propagation in ferroelectric polycrystals: Effect of combined toughening mechanisms
Abdollahi Hosnijeh, Amir; Arias Vicente, Irene (2014-02-15)
Article
Accés restringit per política de l'editorialWe simulate the fracture processes of ferroelectric polycrystals in three dimensions using a phase-field model. In this model, the grain boundaries, cracks and ferroelectric domain walls are represented in a diffuse way ...