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

Wei Wang; Shi Yan; Gangbing Song; Haichang Gu

doi:10.1117/12.714709

20 April 2007 Derivation and simulation of an improved two-dimensional constitutive law for shape memory alloys

Wei Wang, Shi Yan, Gangbing Song, Haichang Gu

Proceedings Volume 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007; 65262P (2007) https://doi.org/10.1117/12.714709
Event: SPIE Smart Structures and Materials + Nondestructive Evaluation and Health Monitoring, 2007, San Diego, California, United States

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.

Citation Download Citation

Wei Wang, Shi Yan, Gangbing Song, and Haichang Gu "Derivation and simulation of an improved two-dimensional constitutive law for shape memory alloys", Proc. SPIE 6526, Behavior and Mechanics of Multifunctional and Composite Materials 2007, 65262P (20 April 2007); https://doi.org/10.1117/12.714709

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