Table of Contents
Smart Materials Research
Volume 2014, Article ID 870649, 11 pages
http://dx.doi.org/10.1155/2014/870649
Research Article

Unit Cell Analysis of the Superelastic Behavior of Open-Cell Tetrakaidecahedral Shape Memory Alloy Foam under Quasi-Static Loading

1Department of Mechanical Engineering, École de technologie supérieure, Montréal, QC, Canada H3C 1K3
2Laboratoire Rhéologie et Procédés, 363 rue de la Chimie-Bâtiment B, Domaine Universitaire, BP 53, 38041 Grenoble Cedex 9, France

Received 16 January 2014; Revised 2 April 2014; Accepted 18 April 2014; Published 8 July 2014

Academic Editor: Outi Söderberg

Copyright © 2014 Guillaume Maîtrejean et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Cellular solid materials and, more specifically, foams are increasingly common in many industrial applications due to their attractive characteristics. The tetrakaidecahedral foam microstructure, which can be observed in many types of foams, is studied in the present work in association with shape memory alloys (SMA) material. SMA foams are of particular interest as they associate both the shape memory effect and the superelasticity with the characteristics of foam. A Unit Cell Finite Element Method approach is used, an approach that allows accurate predicting of the macroscale response of the foam with a highly reduced numerical effort. The tetrakaidecahedral foam’s responses, both in the elastic and in the superelastic stages, are then extracted and compared with results from the literature. The tetrakaidecahedral geometry is found to be of particular interest when associated with SMA as it takes more advantage of the superelastic property of the material than foams with randomly distributed porosity.