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|Title:||An isotropic-plasticity-based constitutive model for martensitic reorientation and shape-memory effect in shape-memory alloys|
|Source:||Pan, H., Thamburaja, P., Chau, F.S. (2007-11). An isotropic-plasticity-based constitutive model for martensitic reorientation and shape-memory effect in shape-memory alloys. International Journal of Solids and Structures 44 (22-23) : 7688-7712. ScholarBank@NUS Repository. https://doi.org/10.1016/j.ijsolstr.2007.05.006|
|Abstract:||In this work, we develop an isotropic-plasticity-based constitutive model for initially martensitic shape-memory alloys (SMA) which exhibit martensitic reorientation and the shape-memory effect. The constitutive model is then implemented in the [Abaqus reference manuals. 2006. Providence, R.I.] finite-element program by writing a user-material subroutine. The results from the constitutive model and numerical procedure are then compared to representative physical experiments conducted on polycrystalline rod and sheet Ti-Ni. The constitutive model and the numerical simulations are able to reproduce the stress-strain responses from these physical experiments to good accuracy. Finally, two different boundary value problems utilizing the one-way shape-memory effect are studied: (a) the deformation of an arterial stent, and (b) a micro-clamper. We show that our constitutive model can be used to model the response of the aforementioned boundary value examples. © 2007 Elsevier Ltd. All rights reserved.|
|Source Title:||International Journal of Solids and Structures|
|Appears in Collections:||Staff Publications|
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