Journal ArticleDOI
A thermodynamically motivated model for ferroelectric ceramics with grain boundary effects
TLDR
In this paper, a micromechanically motivated model is embedded into an electromechanical coupled finite element formulation in which each grain is represented by a single finite element and the initial dipole directions are assumed to be randomly oriented to mimic the virgin state of the unpoled ferroelectric polycrystal.Abstract:
The aim of this paper is to capture the grain boundary effects taking into consideration the nonlinear dissipative effects of ferroelectric polycrystals based on firm thermodynamic principles. The developed micromechanically motivated model is embedded into an electromechanically coupled finite element formulation in which each grain is represented by a single finite element. Initial dipole directions are assumed to be randomly oriented to mimic the virgin state of the unpoled ferroelectric polycrystal. An energy-based criterion using Gibbs free energy is adopted for the initiation of the domain switching process. The key aspect of the proposed model is the incorporation of effects of the constraint imposed by the surrounding grains on a switching grain. This is accomplished by the inclusion of an additional term in the domain switching criterion that is related to the gradient of the driving forces at the boundary of the grains. To study the overall bulk ceramics behavior, a simple volume-averaging technique is adopted. It turns out that the simulations based on the developed finite element formulation with grain boundary effects are consistent with the experimental data reported in the literature.read more
Citations
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Journal ArticleDOI
Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O3 ceramic
Tanmaya Badapanda,V. Senthil,S. K. Rout,Laécio S. Cavalcante,Alexandre Zirpoli Simões,T.P. Sinha,Simanchalo Panigrahi,M. M. de Jesus,Elson Longo,José Arana Varela +9 more
TL;DR: In this paper, the Rietveld refinement, microstructure, conductivity and impedance properties of Ba[Zr0.25Ti0.75]O3 ceramic synthesized by solid state reaction were reported.
Journal ArticleDOI
Modeling of dielectric and piezoelectric response of 1-3 type piezocomposites
R. Jayendiran,A. Arockiarajan +1 more
TL;DR: In this paper, a thermodynamically consistent framework combining the phenomenological and micromechanical models was developed to predict the coupled behavior of 1-3 piezocomposites with different volume fractions and bulk piezoceramics.
Journal ArticleDOI
Non-linear electromechanical response of 1–3 type piezocomposites
R. Jayendiran,A. Arockiarajan +1 more
TL;DR: In this paper, a thermodynamically consistent uni-axial framework is developed to predict the nonlinear behavior of 1-3 piezocomposites with different volume fractions and bulk piezoceramics.
Journal ArticleDOI
Experimental and theoretical investigation of temperature-dependent electrical fatigue studies on 1-3 type piezocomposites
Y. Mohan,A. Arockiarajan +1 more
TL;DR: In this paper, a simplified macroscopic uni-axial model based on physical mechanisms of domain switching and continuum damage mechanics has been developed to predict the nonlinear fatigue behavior of 1-3 piezocomposites for temperature dependent electrical fatigue loading conditions.
Journal ArticleDOI
Electrical fatigue behaviour in lead zirconate titanate: an experimental and theoretical study
TL;DR: In this article, a simplified macroscopic model based on physical mechanisms of domain switching is developed to predict the nonlinear behavior of electrical fatigue in lead zirconate titanate (PZT) for different loading frequencies.
References
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Journal ArticleDOI
A constitutive model for ferroelectric PZT ceramics under uniaxial loading
Marc Kamlah,Qing Jiang +1 more
TL;DR: In this article, a macroscopic constitutive model for the purpose of engineering reliability analysis of piezoceramic components designed for so-called ''smart'' electromechanical sensor and actuator applications is presented.
Journal ArticleDOI
A phenomenological constitutive model for ferroelastic and ferroelectric hysteresis effects in ferroelectric ceramics
TL;DR: In this article, a macroscopic constitutive model for domain switching effects in ferroelectric ceramics is presented. But the authors focus on a hexahedral finite brick element and use an irreversible electric field, which serves instead of the remanent polarization as internal variable.
Journal ArticleDOI
Micromechanical modelling of ferroelectrics
TL;DR: In this article, a review of recent micromechanical models of ferroelectric switching is presented, from discrete switching models that neglect grain-to-grain interaction, through to incremental switching model that account for interaction between grains.
Journal ArticleDOI
A thermodynamically consistent mesoscopic model for transversely isotropic ferroelectric ceramics in a coordinate-invariant setting
Jörg Schröder,H. Romanowski +1 more
TL;DR: In this paper, a phenomenological mesoscopic thermodynamically consistent model for the description of switching processes in ferroelectric materials is presented, which is able to describe the fundamental electromechanical hysteresis effects.
Journal ArticleDOI
Effects of Bias Electric Fields on the Non-linear Ferroelastic Behavior of Soft Lead Zirconate Titanate Piezoceramics
TL;DR: In this article, the authors present systematic measurements of the non-linear depolarization and strain behavior of soft lead zirconate titanate piezoceramics over a wide range of compression loads and bias electric fields.