Abstract
In the present study, a test system was constructed in order to investigate the deformation behavior of shape memory alloy under thermo mechanical loadings, for example, tensile loading-unloading and heating-cooling under constant stress. Then, thermo mechanical loading tests were conducted for shape memory alloy wire. Also, we analized the deformation behavior of shape memory alloy under thermo mechanical loadings by using conventional macroscopic constitutive equation. As a result, it is not easy for conventional constitutive equation of shape memory alloy to analize the deformation behavior under complicated thermo mechanical loadings. It is necessary to construct the novel constitutive equation of shape memory alloy based on the mechanism of deformation.
