The Research of the Difference between Small-Strain and Large-Strain Formulations for Shape Memory Alloys
Based on thermodynamics and phase transformation driving force, we apply a SMA constitutive model to analyze the large and small deformation of SMA materials. Simulations under different loading, uniaxial tension and shear conditions, illustrate the characteristics of the model in large strain deformation and small strain deformation. The results indicate that the difference between the two methods is small under the uniaxial tension case, while the large deformation and the small deformation results are very different under shear deformation case. It lays a foundation for the further studies of the constitutive model of SMA, especially in the multiaxial non-proportional loading aspects.
J. Yao et al., "The Research of the Difference between Small-Strain and Large-Strain Formulations for Shape Memory Alloys", Applied Mechanics and Materials, Vols. 229-231, pp. 3-9, 2012