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Proceedings Paper

Derivation and simulation of an improved two-dimensional constitutive law for shape memory alloys
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Paper Abstract

An improved two-dimensional constitutive model for Shape memory alloys (SMAs), which can describe both the shape memory effect (SME) and super elasticity effect (SE) of the SMAs, is developed based on the previous work of Boyd and Lagoudas, who used the thermodynamics theories of free energy and dissipation energy to derive the constitutive law of SMAs. The improved model, which will combine the ideas of Brinsion's one-dimensional constitutive law and the concepts of Boyd and Lagoudas' two-dimensional one, has a simple but accurate expression. The results of the simulations show that the developed constitutive model can qualitatively describe the thermo-mechanical behaviors of two-dimensional SMAs and can be used in the analysis of structures actuated by SMAs.

Paper Details

Date Published: 20 April 2007
PDF: 8 pages
Proc. SPIE 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007, 65262P (20 April 2007); doi: 10.1117/12.714709
Show Author Affiliations
Wei Wang, Shenyang Jianzhu Univ. (China)
Shi Yan, Shenyang Jianzhu Univ. (China)
Gangbing Song, Univ. of Houston (United States)
Haichang Gu, Univ. of Houston (United States)

Published in SPIE Proceedings Vol. 6526:
Behavior and Mechanics of Multifunctional and Composite Materials 2007
Marcelo J. Dapino, Editor(s)

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