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- Title
Phenomenological description of thermomechanical behavior of shape memory alloy.
- Authors
Liu, Jun-Yan; Lu, Hao; Chen, Jun-Mei; Alain, Combescure; Wu, Tong
- Abstract
On the basis of a thermomechanical phenomenological model, we analyze the thermomechanical behavior of polycrystalline NiTi. Pseudoelastic response and strain-temperature response under fixed stress are studied by using finite element simulation. Calculated mechanical and thermal hysteresis behaviors of NiTi sheet are in good agreement with those observed experimentally. Hardening in stress–strain hysteresis loop and sharp change of strain in strain-temperature hysteresis loop are described by numerical simulation. The result from thermomechanically coupled calculation shows the phenomenon that phase transition occurs by nucleation and propagation of transformation fronts.
- Subjects
PHENOMENOLOGY; THERMOMECHANICAL properties of metals; SHAPE memory alloys; HYSTERESIS; HYSTERESIS loop; PHASE transitions
- Publication
Journal of Materials Science, 2008, Vol 43, Issue 14, p4921
- ISSN
0022-2461
- Publication type
Article
- DOI
10.1007/s10853-008-2716-9