A three-dimensional description of shape memory alloy thermomechanical behavior including plasticity

作者：Oliveira Sergio A; Savi Marcelo A^*; Zouain Nestor

来源：Journal of the Brazilian Society of Mechanical Sciences and Engineering, 2016, 38(5): 1451-1472.

DOI：10.1007/s40430-015-0476-4

• Shape memory alloys
• Smart materials
• Constitutive model
• Plasticity
• Numerical simulation
• Phase transformations

This paper introduces a novel three-dimensional constitutive model that describes the thermomechanical behavior of shape memory alloys (SMAs). The model is developed within the framework of continuum mechanics and the standard generalized materials. Four macrocospic phases are considered associated with austenite and three variants of martensite. Phase transformations can be induced by temperature, volumetric and deviatoric strains. The description of plasticity is also of concern assuming kinematic and isotropic hardening. Numerical simulations are carried out showing that the proposed model is able to capture the general thermomechanical behavior of SMAs for uniaxial and multiaxial tests, even in situations with complex thermomechanical loading paths.

• 出版日期2016-6