A Finite Element Model to Predict the Effect of Porosity on Elastic Modulus in Low-Porosity Materials

@article{Morrissey2018AFE,
  title={A Finite Element Model to Predict the Effect of Porosity on Elastic Modulus in Low-Porosity Materials},
  author={Liam S. Morrissey and Sam Nakhla},
  journal={Metallurgical and Materials Transactions A},
  year={2018},
  volume={49},
  pages={2622-2630}
}
The effect of porosity on elastic modulus in low-porosity materials is investigated. First, several models used to predict the reduction in elastic modulus due to porosity are compared with a compilation of experimental data to determine their ranges of validity and accuracy. The overlapping solid spheres model is found to be most accurate with the experimental data and valid between 3 and 10 pct porosity. Next, a FEM is developed with the objective of demonstrating that a macroscale plate with… Expand

Figures and Tables from this paper

A Finite Element Model to Study the Effect of Porosity Location on the Elastic Modulus of a Cantilever Beam
The effect of the location of porosity concentration on elastic modulus of a cantilever beam is investigated. First, two-dimensional investigation with beam theory, EulerBernoulli and Timoshenko, wasExpand
Investigating the effect of porosity on elastic modulus through finite element analysis and molecular dynamics simulations
The effect of porosity on elastic modulus was studied. First, a study with experimental load-deflection curve using Finite Element Analysis and beam theory, Euler-Bernoulli and Timoshenko, toExpand
A finite element model to study the effect of porosity location on the elastic modulus of a cantilever beam
An investigation to determine the effect of porosity concentration and location on elastic modulus is performed. Due to advancements in testing methods, the manufacturing and testing of microbeams ...
Investigating various many-body force fields for their ability to predict reduction in elastic modulus due to vacancies using molecular dynamics simulations
ABSTRACT Molecular dynamics simulations are more frequently being utilised to predict macroscale mechanical properties as a result of atomistic defects. However, the interatomic force field canExpand
Quantifying Void Formation and Changes to Microstructure During Hydrogen Charging: A Precursor to Embrittlement and Blistering
Abstract Hydrogen diffusion into the microstructure is a key first step for both hydrogen embrittlement and hydrogen blistering. Previous research has suggested that an increase in voids pre-loadingExpand

References

SHOWING 1-10 OF 39 REFERENCES
Elastic Properties of Model Porous Ceramics
The finite-element method (FEM) is used to study the influence of porosity and pore shape on the elastic properties of model porous ceramics. Young's modulus of each model is practically independentExpand
A new approach for the Young's modulus-porosity correlation of ceramic materials
A new approach for determining the Young's modulus of porous ceramics is presented. The approach is based on a previous equation derived for two-phase composites on the basis of a microstructuralExpand
Prediction of elastic moduli of solids with oriented porosity
There have been no simple equations available to predict the effects of arbitrarily shaped voids over the entire range of porosity encountered in real materials. Empirical expressions have beenExpand
Effect of Porosity on the Stiffness of Cast Steel
AbstractThe effect of porosity on the elastic behavior of cast steel is investigated experimentally, and an approach for including porosity effects in finite element analysis (FEA) simulations isExpand
Influence of porosity on Young's modulus and Poisson's ratio in alumina ceramics
This work presents a study on the influence of the porosity level on Young's modulus and Poisson's ratio of sintered alumina. A non-destructive technique using ultrasonic waves was used to determineExpand
On the compressive behaviour of sintered porous coppers with low to medium porosities - Part I: Experimental study
A space holder method in power metallurgy has been used to prepare porous coppers of low to medium porosities with good control of pore size, shape as well as distribution. The compressive propertiesExpand
Nondestructive evaluation of elastic parameters of sintered iron powder compacts
A systematic study of the variation of elastic moduli and Poisson's ratio of sintered iron compacts of porosity (up to 21.6%) has been carried out by measuring longitudinal and shear ultrasonicExpand
Mechanical Properties of Porous Materials
Porous materials are commonly found in nature and as industrial materials such as wood, carbon, foams, ceramics and bricks. In order to use them effectively, their mechanical properties must beExpand
Effect of Porosity on Physical Properties of Sintered Alumina
Porous structures having a continuous solid phase with isolated pores were prepared by the addition of different amounts of crushed naphthalene to an alumina casting slip. Samples of from 5 to 50%Expand
Deformation and energy absorption diagrams for cellular solids
Abstract The mechanical properties of 3 types of cellular solids (flexible, plastic and brittle) have been measured as a function of density. The results are compared with models for the stiffness,Expand
...
1
2
3
4
...