Affiliation:
1. Department of Civil Engineering and Computer Science Engineering (DICII), Università degli Studi di Roma Tor Vergata, via del Politecnico 1, 00133 Roma – Italy
Abstract
In this paper, a novel model for stress-induced martensitic transformations in shape-memory alloys is proposed. Accordingly, the constitutive pseudo-elastic behavior of these materials is described. The model accounts for the possible co-existence of austenitic/martensitic phases and for asymmetric response in tension and compression (both for transformation and stiffness properties). The model is developed under the assumption of ideal behavior during martensitic transformation, and the predicted response is governed by few parameters, standard in the context of shape-memory alloys' constitutive models, that can be straightforwardly identified from experimental data. Moreover, proposed modeling framework opens to the investigation on the effects of non-linear transformation lines in phase diagrams and of temperature-dependent transformation strains.
Subject
Mechanical Engineering,Mechanics of Materials
Cited by
1 articles.
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1. Shape Memory Alloys and Collisions;Springer Series in Solid and Structural Mechanics;2016-07-29