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Density dependence of the macroscale superelastic behavior of porous shape memory alloys: a two-dimensional approach

Maîtrejean, Guillaume et Terriault, Patrick et Brailovski, Vladimir. 2013. « Density dependence of the macroscale superelastic behavior of porous shape memory alloys: a two-dimensional approach ». Smart Materials Research, vol. 2013.

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Résumé

Porous Shape Memory Alloys (SMAs) are of particular interest for many industrial applications, as they combine intrinsic SMA (shape memory effect and superelasticity) and foam characteristics.The computational cost of direct porous material modeling is however extremely high, and so designing porous SMAstructure poses a considerable challenge. In this study, an attempt is made to simulate the superelastic behavior of porous materials via the modeling of fully dense structures with material properties modified using a porous/bulk density ratio scaling relation. Using this approach, direct modeling of the porous microstructure is avoided, and only the macroscale response of the model is considered which contributes to a drastic reduction of the computational cost. Foamstructures with a gradient of porosity are also studied, and the prediction made using the fully dense material model is shown to be in agreement with the mesoscale porous material model.

Type de document: Article publié dans une revue, révisé par les pairs
Professeur:
Professeur
Terriault, Patrick
Brailovski, Vladimir
Affiliation: Génie mécanique
Date de dépôt: 26 avr. 2016 17:37
Dernière modification: 26 avr. 2016 18:10
URI: http://espace2.etsmtl.ca/id/eprint/12576

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