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DEM–FEA estimation of pores arrangement effect on the compressive Young’s modulus for Mg foams

  • This work reports the study of the effect of the pore arrangement on the compressive behavior of Mg foams with regular pore size and porosities ranging from 25% to 45%. Pore arrangements were modeled using Finite Element Analysis (FEA), with random and ordered models, and compared to the estimations obtained for a previous work. The coordinates of the random pore arrangements were firstlyThis work reports the study of the effect of the pore arrangement on the compressive behavior of Mg foams with regular pore size and porosities ranging from 25% to 45%. Pore arrangements were modeled using Finite Element Analysis (FEA), with random and ordered models, and compared to the estimations obtained for a previous work. The coordinates of the random pore arrangements were firstly generated using Discrete Element Method (DEM), and used in a second stage for modeling the pores by FEA. Estimations were also compared to the experimental results for Mg foams obtained by means of powder metallurgy. Results show important drops in the Young’s moduli as the porosity increases for both, experimental results and FEA estimations. Estimations obtained using ordered pore arrangements presented significant differences when compared to the estimations acquired from models with random arrangements. The randomly arranged models represent more accurately the real topologies of the experimental metallic foams. The Young’s moduli estimated using these models were in excellent agreement with the experiments, whilst the estimations obtained using ordered models presented relative errors significantly higher. The importance of the use of more realistic FEA models for improving the predicting ability of this method was probed, for the study of the mechanical properties of metallic foams.show moreshow less

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Metadaten
Author:Luis Pérez Pozo, Sheila Lascano, Claudio Aguilar, Danilo A. Estay, Ulrich Messner, Ignacio A. Figueroa, Ismeli Alfonso López
Publisher:Elsevier
Year of Publication:2015
Language:English
GND Keyword:Pore; Schaum
Parent Title (English):Computational Materials Science
Volume:110
ISSN:0927-0256
First Page:281
Last Page:286
Document Type:Article (reviewed)
Institutes:Hochschule Offenburg / Bibliografie
Acces Right:Frei zugänglich
Release Date:2019/11/05
Licence (German):License LogoEs gilt das UrhG
DOI:https://doi.org/10.1016/j.commatsci.2015.08.042