The employment of shape memory alloys (SMAs) in a large number of engineering applications has been the motivation for an increasing interest toward a correct and exhaustive modeling of SMA macroscopic behavior. The aim of this paper is the numerical investigation of the theoretical model recently proposed by Auricchio and Bonetti, performed through a more effective and efficient procedure, inspired to that presented for crystal plasticity and consisting in the replacement of the classical set of Kuhn-Tucker conditions by the so-called Fischer-Burmeister complementarity function. Numerical predictions associated with various thermo-mechanical paths are compared to experimental results and the analysis of a boundaryvalue problem is described. Numerical results assess the reliability of the new model and the procedure is verified to be appropriate for the model itself.
Refined shape memory alloys model taking into account martensite reorientation
AURICCHIO, FERDINANDO;BONETTI, ELENA;Scalet G.;
2012-01-01
Abstract
The employment of shape memory alloys (SMAs) in a large number of engineering applications has been the motivation for an increasing interest toward a correct and exhaustive modeling of SMA macroscopic behavior. The aim of this paper is the numerical investigation of the theoretical model recently proposed by Auricchio and Bonetti, performed through a more effective and efficient procedure, inspired to that presented for crystal plasticity and consisting in the replacement of the classical set of Kuhn-Tucker conditions by the so-called Fischer-Burmeister complementarity function. Numerical predictions associated with various thermo-mechanical paths are compared to experimental results and the analysis of a boundaryvalue problem is described. Numerical results assess the reliability of the new model and the procedure is verified to be appropriate for the model itself.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
