Three-dimensional modeling of pseudoelastic effect of the shape memory alloys
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Date
2015-01-10
Journal Title
Journal ISSN
Volume Title
Publisher
Journal of the Serbian Society for Computational Mechanics
Abstract
The present work aims to develop a 3D constitutive model to describe pseudoelastic effect on
the behavior of memory shape alloys. This phenomenological constitutive model is based on a
set of variables: temperature and stress as control variables, and the fraction of the martensite as
an internal variable. By using the first and the second principle of thermodynamics and with a
simple formalism, we have developed constitutive equations followed by criteria of
transformations. This developed model has parameters intended to be determined by a tensile
pseudoelastic test. We have introduced an algorithm to simulate the response of the model with
respect to experimental data. Three cases were considered: one dimensional, biaxial and triaxial
loading.
Description
The present work aims to develop a 3D constitutive model to describe pseudoelastic effect on
the behavior of memory shape alloys. This phenomenological constitutive model is based on a
set of variables: temperature and stress as control variables, and the fraction of the martensite as
an internal variable. By using the first and the second principle of thermodynamics and with a
simple formalism, we have developed constitutive equations followed by criteria of
transformations. This developed model has parameters intended to be determined by a tensile
pseudoelastic test. We have introduced an algorithm to simulate the response of the model with
respect to experimental data. Three cases were considered: one dimensional, biaxial and triaxial
loading.