Modeling of coupled phase transformation and reorientation in shape memory alloys under non-proportional thermomechanical loading

被引：47

作者：

Chatziathanasiou, Dimitris ^{[1
]}

Chemisky, Yves ^{[1
]}

Chatzigeorgiou, George ^{[1
]}

Meraghni, Fodil ^{[1
]}

机构：

[1] Arts & Metiers ParisTech, CNRS, LEM3, UMR 7239, 4 Rue Augustin Fresnel, F-57078 Metz 01, France

来源：

INTERNATIONAL JOURNAL OF PLASTICITY | 2016年 / 82卷

关键词：

Phase transformation; Thermomechanical processes; Constitutive behaviour; Martensitic reorientation; Numerical algorithms; CONSTITUTIVE MODEL; PARAMETER-IDENTIFICATION; PHENOMENOLOGICAL MODEL; MARTENSITE; BEHAVIOR; PSEUDOELASTICITY; DEFORMATION; STRAIN;

D O I：

10.1016/j.ijplas.2016.03.005

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

In the present study, a new 3D thermodynamic coupled model is proposed for SMAs. The behavior of SMA structures is described through several strain mechanisms, each associated with its proper internal variables. This model is built to capture the particular behavior of SMAs when subjected to complex loading, namely non-proportional thermomechanical loading. To achieve this task, a new approach to describe the martensitic reorientation mechanism has been introduced in conjuction with a new method to account for forward and reverse transformation. Thermomechanical coupling, related to dissipation and latent heat is fully implemented. The validity of the model is demonstrated by comparing experimental results of complex thermomechanical loading paths of SMA structures with numerical simulations. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：192 / 224

页数：33

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