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

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Maîtrejean, Guillaume, 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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Abstract

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.

Item Type: Peer reviewed article published in a journal
Professor:
Professor
Terriault, Patrick
Brailovski, Vladimir
Affiliation: Génie mécanique
Date Deposited: 26 Apr 2016 17:37
Last Modified: 26 Apr 2016 18:10
URI: http://espace2.etsmtl.ca/id/eprint/12576

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