, Volume 43, Issue 2, pp 165–172 | Cite as

Hysteresis modeling of two-way shape memory effect in NiTi alloys

  • A. Falvo
  • F. Furgiuele
  • C. Maletta


In the present study the two-way shape memory effect (TWSME) of a Ni-51 at.% Ti alloy was investigated and a numerical model, able to simulate its hysteretic behaviour in the strain-temperature response, is proposed. In particular, the TWSME was induced through a proper thermo-mechanical training, carried out at increasing number of training cycles and for two values of training deformation, and the thermal hysteretic behaviour, between M f (Martensite finish temperature) and A f (Austenite finish temperature), was recorded. The experimental measurements were used to develop a phenomenological model, based on the Prandtl-Ishlinksii hysteresis operator, which was implemented in a Matlab® function and a Simulink® model. A systematic comparison between experimental results and numerical predictions is illustrated and a satisfactory accuracy and efficiency has been observed, therefore the method looks suitable for real-time control of NiTi based actuators.


Prandtl-Ishlinksii Hysteretic behaviour TWSME Ni-Ti alloys Numerical simulations 


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© Springer Science+Business Media B.V. 2008

Authors and Affiliations

  1. 1.Department of Mechanical EngineeringUniversity of CalabriaArcavacata di RendeItaly

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