I have done a stress-strain test and it looks like the picture attached. However, in here, I only have upper and lower plateau stresses.
In Auricchio's model for the superelastic behavior of nitinol material, four parameters and constant are required to model the behavior. How can I extract these parameters from my test?
What I have from my test: upper plateau stress, lower plateau stress, elongation, residual elongation
What I need for the modeling: Sigma_s and Sigma_f for both forward and reverse phase transformations (four constants as shown in the attached picture), residual strain.
Kartikeya Parmar thanks for the answer. Given that I only have two upper and lower plateaus, is it safe to assume that my start and finish stress values are the same?
see the upper plateu gives sigma sas and sigma fas and lower plateus gives you values of sigma s sa and sigma fsa i did this in ansys. dont know which simulation software u use
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