期刊
MECHANICS OF MATERIALS
卷 41, 期 7, 页码 849-856出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.mechmat.2008.11.007
关键词
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资金
- Tunisian ministry of national education [04SI 117]
- French ministry of foreign affairs
In this paper, we propose a thermo-mechanical three-dimensional constitutive law adapted to Fe-based shape memory alloys. It takes into account the effect of the martensitic transformation and the plastic slip mechanisms and their interaction. The adopted formulation is based on a simplified micromechanical description. The macroscopic behaviour is derived by considering the equivalent homogeneous effect on a representative volume element. The Gibbs free energy expression is defined. Thermodynamic driving forces are then derived and compared to critical forces leading to the constitutive equations solved by Newton-Raphson numerical scheme. Obtained results for thermo-mechanical loadings are compared to experimental ones. (C) 2008 Elsevier Ltd. All rights reserved.
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