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A Finite Element Model To Predict The Effect Of Porosity On Elastic Modulus In Low Porosity Materials

A Finite Element Model To Predict The Effect Of Porosity On Elastic Modulus In Low Porosity Materials

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Title: A Finite Element Model To Predict The Effect Of Porosity On Elastic Modulus In Low Porosity Materials
Author: Morrissey, Liam
Nakhla, Sam
Identifier: CSME009
Abstract: 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 3-10% porosity. Next, a FEM is developed with the objective of demonstrating that a macroscale plate with a center hole can be used to model the effect of microscale porosity on elastic modulus. The FEM agrees best with the overlapping solid spheres model and shows higher accuracy with experimental data than the overlapping solid spheres model.
Subject: Materials Technology
Mechanical Engineering Education
Porosity
Elastic modulus
FEA
Type: Article
Rights: The copyright for the paper content remains with the author.
URI: http://hdl.handle.net/10315/35416
http://dx.doi.org/10.25071/10315/35416
Published: CSME-SCGM
ISSN: 978-1-77355-023-7
Date: 2018-05

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