A Constitutive Description for Shape Memory Alloys with Phase Transformation Microstructure

Abstract:

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An incremental form of constitutive model is proposed for shape memory alloys using the modified strain based on experimental results and the finite element analysis, taking into account of the laminar microstructure, the thickness of martensite phase lamina and the interaction between the two phases. The pseudoelastisity of NiTi shape memory alloy micro-tube subjected to pure tension and pure torsion are analyzed and compared with the experimental results respectively. It can be seen that the pseudoelastic behavior, especially the stress drop during tension processes, can be well described with the proposed model.

Info:

Periodical:

Edited by:

Zhou Mark

Pages:

192-197

DOI:

10.4028/www.scientific.net/AMM.52-54.192

Citation:

W. G. Li et al., "A Constitutive Description for Shape Memory Alloys with Phase Transformation Microstructure", Applied Mechanics and Materials, Vols. 52-54, pp. 192-197, 2011

Online since:

March 2011

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Price:

$35.00

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