Comptes Rendus
no. 4-5
On modeling shape memory polymers as thermoelastic two-phase composite materials
Pierre Gilormini1  ; Julie Diani1
1 Laboratoire procédés et ingénierie en mécanique et matériaux, Arts et Métiers ParisTech, CNRS, 151, boulevard de lʼhôpital, 75013 Paris, France
Comptes Rendus. Mécanique, Volume 340 (2012) no. 4-5, pp. 338-348.

A model has been proposed recently, which describes the experimentally observed mechanical behavior of some shape memory polymers. It considers a purely thermoelastic behavior, without strain rate effects, and assumes essentially that the polymer can be considered as a two-phase composite, with glassy and rubbery phases having volume fractions that depend on temperature only. Since a uniform stress hypothesis was used in the original formulation, with an inconsistency when thermal expansion was considered, this model is revisited here by taking advantage of many results that have been established in the theory of composite materials. It is shown, especially, that a uniform strain hypothesis is more appropriate than assuming a uniform stress.

Publié le :
DOI : 10.1016/j.crme.2012.02.016
Mots clés : Shape memory, Polymers
Pierre Gilormini 1 ; Julie Diani 1

1 Laboratoire procédés et ingénierie en mécanique et matériaux, Arts et Métiers ParisTech, CNRS, 151, boulevard de lʼhôpital, 75013 Paris, France 
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Pierre Gilormini; Julie Diani. On modeling shape memory polymers as thermoelastic two-phase composite materials. Comptes Rendus. Mécanique, Volume 340 (2012) no. 4-5, pp. 338-348. doi : 10.1016/j.crme.2012.02.016. https://comptes-rendus.academie-sciences.fr/mecanique/articles/10.1016/j.crme.2012.02.016/

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