scholarly journals Numerical analysis of the effective properties of inhomogeneously polarized porous piezoelectric ceramics with ni-doped pore walls taking into account the influence of volume fractions of metal and pores

2021 ◽  
Vol 14 (2) ◽  
pp. 190-202
Author(s):  
A.V. Nasedkin ◽  
M.A. Nassar
Keyword(s):  
Numerical Analysis ◽  
Effective Properties ◽  
Piezoelectric Ceramics ◽  
Volume Fractions

Computational Evaluation of Effective Conductivity of Particulate Composites with Imperfect Interfaces

2009 ◽  
Vol 631-632 ◽  
pp. 35-40
Author(s):  
M. Zhang ◽  
Peng Cheng Zhai ◽  
Qing Jie Zhang
Keyword(s):  
Thermal Conductivity ◽  
Effective Thermal Conductivity ◽  
Effective Properties ◽  
Effective Conductivity ◽  
Three Dimensional ◽  
Particulate Composite ◽  
Imperfect Interface ◽  
Particulate Composites ◽  
Imperfect Interfaces ◽  
Volume Fractions

This paper is aimed to numerically evaluate the effective thermal conductivity of randomly distributed spherical particle composite with imperfect interface between the constituents. A numerical homogenization technique based on the finite element method (FEM) with representative volume element (RVE) was used to evaluate the effective properties with periodic boundary conditions. Modified random sequential adsorption algorithm (RSA) is applied to generate the three dimensional RVE models of randomly distributed spheres of identical size with the volume fractions up to 50%. Several investigations have been conducted to estimate the influence of the imperfect interfaces on the effective conductivity of particulate composite. Numerical results reveal that for the given composite, due to the existence of an interfacial thermal barrier resistance, the effective thermal conductivity depends not only on the volume fractions of the particle but on the particle size.

Influence of Volume Fraction of Piezoelectric Ceramics on Poperties of PZT672/Epoxy1-3 Piezocomposite

2014 ◽  
Vol 989-994 ◽  
pp. 364-368
Author(s):  
Bin Zhang ◽  
Li Kun Wang ◽  
Lei Qin ◽  
Chao Zhong ◽  
Dan Long ◽  
...  
Keyword(s):  
Volume Fraction ◽  
Piezoelectric Ceramics ◽  
Good Match ◽  
Piezoelectric Composites ◽  
Volume Fractions ◽  
Filling Method ◽  
Properties Of Composites

PZT672/epoxy 1-3 piezoelectric composites were fabricated by the cut-filling method. The parameters of PZT672/epoxy 1-3 piezoelectric composites varying with different PZT volume fractions have been measured and compared with theoretical values. The results show a good match between theoretical values and measurements. The authors conclude the regular of the properties of composites varying with PZT volume fraction.

Effective properties of piezoceramics with metal inclusions: numerical analysis

2021 ◽  
Vol 575 (1) ◽  
pp. 84-91
Author(s):  
A. V. Nasedkin ◽  
A. A. Nasedkina ◽  
M. E. Nassar ◽  
A. N. Rybyanets
Keyword(s):  
Numerical Analysis ◽  
Effective Properties

Effective properties of polycrystalline piezoelectric ceramics

1999 ◽  
Vol 09 (PR9) ◽  
pp. Pr9-239-Pr9-247 ◽  
Author(s):  
J. Rödel ◽  
W. S. Kreher
Keyword(s):  
Effective Properties ◽  
Piezoelectric Ceramics

The numerical analysis of piezoelectric ceramics based on the Hermite-type RPIM

2017 ◽  
Vol 309 ◽  
pp. 170-182 ◽  
Author(s):  
Jichao Ma ◽  
Gaofeng Wei ◽  
Dandan Liu ◽  
Gongtian Liu
Keyword(s):  
Numerical Analysis ◽  
Piezoelectric Ceramics

Designing composite microstructures with targeted properties

2001 ◽  
Vol 16 (1) ◽  
pp. 280-285 ◽  
Author(s):  
S. Hyun ◽  
S. Torquato
Keyword(s):  
Numerical Method ◽  
Optimization Problem ◽  
Effective Properties ◽  
Optimization Technique ◽  
Electromagnetic Properties ◽  
Target Problem ◽  
Two Phase ◽  
Volume Fractions ◽  
Fixed Volume ◽  
Thermal Conductivities

We present a numerical method to find specific composite microstructures with targeted effective properties. The effective properties that may be prescribed are quite diverse and include transport, mechanical, and electromagnetic properties, as well as properties associated with coupled phenomena, such as piezoelectric and thermoelectric coefficients. We formulated the target problem as an optimization problem. To illustrate our general target optimization technique, we have successfully found two-phase composite microstructures having specified effective electrical or thermal conductivities at fixed volume fractions. The method can also be used to design microstructures with multifunctional characteristics.

The exact coupled bounds for effective tensors of electrical and magnetic properties of two-component two-dimensional composites

1992 ◽  
Vol 122 (1-2) ◽  
pp. 93-125 ◽  
Author(s):  
A. V. Cherkaev ◽  
L. V. Gibiansky
Keyword(s):  
Magnetic Properties ◽  
Effective Properties ◽  
Two Dimensional ◽  
Symmetric Tensors ◽  
Volume Fractions ◽  
Electrical And Magnetic Properties ◽  
Anisotropic Composite ◽  
Two Component ◽  
Exact Bounds ◽  
The Given

SynopsisThis paper describes the effective properties of a two-dimensional two-component dielectric composite. Each component is supposed to be isotropic and is characterised by a pair of constants of electrical and magnetic permeabilities. Effective properties of an arbitrary anisotropic composite depend on its microstructure and are characterised by a pair of symmetric tensors of electrical and magnetic permeabilities. Here we construct the so-called Gm-closure which is the set of all possible values of these pairs, corresponding to all possible microstructures with prescribed volume fractions of the given components. The exact bounds of the Gm-closure are obtained and the microstructure corresponding to each point of the Gm-closure set is determined.

Effective Properties of Heterogeneous Magnetoelectroelastic Materials with Multi-Coated Inclusions

2013 ◽  
Vol 550 ◽  
pp. 25-32 ◽  
Author(s):  
Abdel Bakkali ◽  
L. Azrar ◽  
A.A. Aljinadi
Keyword(s):  
Integral Equation ◽  
Effective Properties ◽  
Heterogeneous Materials ◽  
Local Concentration ◽  
Volume Fractions ◽  
Magnetoelectroelastic Materials ◽  
Self Consistent ◽  
Micromechanical Models ◽  
Global And Local

In this paper, the effective properties of magnetoelectroelastic heterogeneous materials with ellipsoidal multi-inclusions are modeled and numerically investigated. The modeling is based on the integral equation that takes into account the multi-coated effect as well as the magnetoelectroelastic interfacial operators and global and local concentration tensors. Various types and kinds of coatings can be considered. The effective properties are predicted based on various micromechanical models such as Mori-Tanaka, Self-Consistent and Incremental Self-Consistent. These properties are presented in terms of the volume fractions of the multi-coated inclusions, thicknesses of the coatings, type and kind of inclusions.

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