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Impact of the choice of a 3D thermomechanical model for shape memory alloys on the fracture and the delamination predictions

✍ Scribed by Christian Lexcellent; Rachid M. Laydi; Virginie Taillebot

Publisher
Elsevier
Year
2011
Tongue
English
Weight
432 KB
Volume
10
Category
Article
ISSN
1877-7058

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✦ Synopsis

The aim of this paper is to examine the impact of the choice of "plasticity theory-inspired" SMA model in the prediction of the shape of phase transformation domains. In this field a comparison is made between Huber-Von Mises based model and an another integrating the asymmetry between tension and compression. Two situations are observed (i) A classical mode I loading on a plate with a crack. The effect of the asymmetry intensity is important for plane stress conditions, not for plane strain ones. (ii) A problem of delamination between a SMA (shape memory alloy) and an elastic solid, reveales that taking into account the asymmetry has negligible impact on the size and the shape of the phase transformation surface generated in SMAs.

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