A cyclic model for superelastic shape memory alloys

Luc Saint-Sulpice; Shabnam Arbab Chirani; Sylvain Calloch

doi:10.1117/12.718091

20 April 2007 A cyclic model for superelastic shape memory alloys

Luc Saint-Sulpice, Shabnam Arbab Chirani, Sylvain Calloch

Proceedings Volume 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007; 65262F (2007) https://doi.org/10.1117/12.718091
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

Abstract

This study concerns the superelasticity of Shape Memory Alloys (SMA) under cyclic loading. A particular attention is paid to the evolution of residual strain with number of cycles (like ratcheting in cyclic plasticity of classical metals). To study the phenomenology of the cyclic behavior and to identify the origin of the developed residual strain a series of cyclic uniaxial tensile tests on copper based alloys wires has been realized. A macroscopic model describing the cyclic behavior of superelastic SMA has been proposed. The originalities of the model are, on the one hand, the definition of a particular elasticity domain when the material is in a two phased state and, on the other hand, an ad hoc kinetic of transformation strain taking into account a residual strain evolution. The proposed model has been identified using our experimental data base and has been used to simulate various cyclic multiaxial loadings.

Citation Download Citation

Luc Saint-Sulpice, Shabnam Arbab Chirani, and Sylvain Calloch "A cyclic model for superelastic shape memory alloys", Proc. SPIE 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007, 65262F (20 April 2007); https://doi.org/10.1117/12.718091

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