The diffusion and the use of shape memory alloys in many aeronautical, biomedical and structural engineering applications is resulting in an increasing research effort toward a reliable and complete modeling of their macroscopic behaviour. As many models for SMA available in the literature consider fully reversible phase transformations (i.e. no permanent inelastic strains), which are proved by experiments to be sometimes a not fully realistic approximation, we present here a 3D model capable of including permanent inelastic effects combined with a good description of pseudo-elastic and shape-memory behaviours. We also show numerical results from both uniaxial and non-proportional biaxial tests, which aim at assessing model features and performance
A Phenomenological 3D Model Describing Stress-induced Solid Phase Transformations with Permanent Inelasticity
AURICCHIO, FERDINANDO;REALI, ALESSANDRO;STEFANELLI, ULISSE MARIA
2007-01-01
Abstract
The diffusion and the use of shape memory alloys in many aeronautical, biomedical and structural engineering applications is resulting in an increasing research effort toward a reliable and complete modeling of their macroscopic behaviour. As many models for SMA available in the literature consider fully reversible phase transformations (i.e. no permanent inelastic strains), which are proved by experiments to be sometimes a not fully realistic approximation, we present here a 3D model capable of including permanent inelastic effects combined with a good description of pseudo-elastic and shape-memory behaviours. We also show numerical results from both uniaxial and non-proportional biaxial tests, which aim at assessing model features and performanceI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
