Distributed-element Preisach model for hysteresis of shape memory alloys

The paper describes the development of distributed-element models for non-l inear hysteresis in materials and structures. The physical model is based o n an approach that views the system as comprising a series of ideal elastop lastic elements. Parameter identification, numerical simulation and inversi on of the model through the application of the Preisach model for hysteresi s are discussed. Experimentally obtained data using Nitinol are compared wi th the model prediction, thus establishing the effectiveness of distributed -element Preisach elements for predicting complex hysteresis effects includ ing high-order hysteresis transition curves.