WIAS Preprint No. 171, (1995)

Landau-Ginzburg model for a deformation-driven experiment on shape memory alloys



Authors

  • Bubner, Nikolaus

Abstract

A Landau-Ginzburg model describing first order martensitic phase transitions in shape memory alloys is considered. The model developed by Falk is transformed in order to simulate deformation-driven experiments done by I. Müller and his co-workers. In these experiments, they do not only observe load-deformation hysteresis loops but also small loops inside these hysteresis loops. Numerical simulations for a CuZnAl single crystal show good agreement with the experiment. We find, for example, nucleation processes, moving phase boundaries, rate-independent hysteresis loops and interior loops.

Appeared in

  • Contin. Mech. Thermodyn., 8 (5) (1996), pp. 293--308

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